[tacostakohashi]

I was always bemused about this idea that putting multiple credit cards on a single physical card is some great feature that a lot of people want and would pay money for.

In my experience, having many credit cards is a complete pain to manage, because for each card you need to monitor the statement, set up the automatic payment (or do it manually), change the address when you move, etc, etc, and no sane person is going to want to do that for lots of cards. The fact that it also fills you your wallet is really the least of the problems you'll have.

It's nice to have one card as a backup, and some hardcore churners / points collectors are going to want 5 or 6 cards and use different cards for different categories... but they're real niches, it's not something that a mainstream, mass market consumer is going to want to manage.

[joshvm]

I have a Curve card, which is essentially this. I paid for the beta and got a free wallet out of it (a nice Tumi one) and £50 in reward points so overall I've actually profited from it. There isn't a monthly charge (yet). Curve is a prepaid Mastercard that acts as a middle man. You spend, it charges whichever card is currently selected. You get extra benefits like zero fees abroad, cash withdrawals, etc.

There is also a reward program which is OK if you shop at the places where you get points, but it's no different to signing your card up to a cashback program like Quidco. There are a few big names like Boots, Waterstones and B&Q where I go reasonably often. https://www.imaginecurve.com/curve-rewards-web/

The main advantage to me is security. If your card gets stolen, you can revoke it within minutes without worrying about someone having access to your debit card. Because it's linked to the app, you can see immediately when transactions happen. You can do the same with a debit card of course, but it's an added layer of obfuscation.

Originally it was supposed to be an amazing loophole for American Express users. You could spend Amex everywhere including on cash withdrawals and rack up points like nobody's business. Then Amex pulled out, so that was a bummer. A lot of people on HeadForPoints got very annoyed and felt like they'd been suckered in. To be fair to Curve, they compensated everyone.

I believe you can still use it to withdraw cash on credit cards though, so there's still a way to manufacture points spend.

I use mine daily and while it's fine 95% of the time, there have been sporadic occasions where it's been declined. You can't use it at pay-at-pump petrol stations, for instance. It's not reliable enough yet that I can go around with only a single card in my wallet (which sort of ruins the idea of it). It's really useful for traveling abroad though.

[xiaodown]

So, for reference, I'm a guy who has multiple cards. I have two debit cards and a credit card.

The credit card is a credit card (and I mostly use it for company purchases that get reimbursed).

The two debit cards correspond to two different checking accounts. I have a "main" checking account that my check gets deposited into, and another account that I use for, mainly, online purchases or recurring subscriptions like netflix or anything where I am worried about card security. I transfer money into the account, then make the purchase, never leaving more than a hundred bucks or so floating in the account. That way, I limit my own pain in the event that someone gets hacked or my card gets leaked online - I'd much rather not be able to pay netflix than not be able to pay rent.

At one point, I also had a home depot card when my wife and I were fixing up our house in preparation to sell it.

I have a wallet that functions effectively as my phone case and wallet in one, and reducing the number of cards I have to carry around to - potentially - drivers' license, one payment card, and clipper card would be fantastic.

[slavik81]

It's a good idea to carry a couple cards.

About a decade ago, I took a sudden flight to a small airport in Colorado due to an emergency at work. When I arrived, I had nothing but a Visa, and a few dollars Canadian.

I was frustrated to find that I couldn't get food or call my work, because Visa wasn't accepted anywhere. The highlight was trying to make a call on a payphone and talking to the operator. When I asked if I could use my credit card to make a call, she listed off MasterCard and a half-dozen credit cards I'd never heard of. "How about Visa?" "No, sorry."

I will forever remember the janitor for lending me his cell phone and getting me out of that mess. After that, I made sure I carried multiple cards.

[bigiain]

This. I ride not-particularly-reliable motorcycles. My personal philosophy is to always have access via at least two different financial institutions and their computer networks to sufficient debit/credit funds to get myself and a possibly broken bike home from the most remote place I could possibly end up on a trip.

(I did once end up having a tremendously fun weekend in Melbourne thanks to a broken down bike and a weekend long outage of my then only bank's ATM network - but it would have been even more fun with more than the cash in my pocket and relying on friends for somewhere to sleep until a branch opened on Monday morning...)

[reubensutton]

On the London transport network you've been able to pay at the barriers with a contactless credit card in the same way as you would use an Oyster card for a couple of years now. It's weird that other transport networks haven't adopted it yet

[richev]

It's being trialed in Sydney http://www.smh.com.au/nsw/the-new-opal-commuters-to-trial-sw...

[jahnu]

Such a system has been in use in Singapore for more than 15 years.

Vienna does away with all of this fuss by simply doing random checks, issuing on the spot fines for fare evaders, and not having to manage the expense of turnstiles etc.

[inopinatus]

Neither the ez-link or NETS FlashPay cards are credit cards. The SG trial of contactless credit cards for public transport micropayments kicked off only last month. http://www.straitstimes.com/singapore/transport/tap-masterca...

[srssays]

How do you pay for tickets in Vienna then?

I kind of like the barriers, if you are on the station platform, then you have definitely paid. For me, the stations that don't have barriers are more stressful, as you run the risk of forgetting to tap your card (or the tap not registering) and incurring a maximum fare.

[MandieD]

In Nürnberg, you can either buy paper tickets from ubiquitous automats or in the local transit app (with a pre-configured credit card or current account). I love it.

Local bus drivers will sell tickets, but there are also ticket validation machines in the middle of most busses. Local trains and subways are trust basis, but I've seen more random ticket checks recently. Ticket checks are more frequent on long-distance trains, but still, no barriers. I have yet to travel on local or long-distance trains in Germany or Austria that aren't trust-based.

[mrbabbage]

Berlin has a similar proof-of-payment system, where there are no physical barriers between the street and train platforms. Most people have multi use tickets; you can buy week, month, or year long tickets.

I definitely prefer the proof-of-payment setup more. London (which has turnstiles) can get crazy backups with people trying to tap into / out of the system, and the Berlin system lets you engineer more convenient and therefore customer-friendly stations -- no need for mezzanines, paid vs free elevators, and the like.

[randrews]

That's what caused me to get stopped by the police my first day in Berlin a few years ago. I wanted to go to a board game store, so I looked one up on Google in the hotel lobby, walked to a u-bahn station, paid a couple euros for a ticket, walked downstairs and got on a train.

And promptly got pulled off the train at the next stop for not paying.

They were very understanding when I explained I had only been in the country about two hours (and showed my passport stamp as proof). They explained that there are machines to punch holes in the tickets... I did think it was strange that there weren't any turnstiles, but I figured, maybe you run into them on the way out or something (and I had only been in a foreign country two hours, everything was strange).

[Symbiote]

Some stations in London can be so busy, that they'd need some way to prevent people from overcrowding the platform even if there were no barriers.

It's pretty common for smaller stations near major football stadia to have the barriers controlled manually after big games -- totally open for some minutes, then completely shut until the platform has cleared.

(London used to have a proof-of-payment system on the articulated buses, since you were allowed to board at any door, and it still exists on the trams.)

[thaumasiotes]

Maximum fare?? The fine for fare evasion should be well above the maximum fare.

[robjan]

In London, the barriers automatically charge the maximum fare if you forget to touch in or out of the system. It helps because you can jump the barrier to get into the system but you never know if ticket inspectors/security will be present at the station where you plan on alighting. The penalty for being caught jumping the barrier is significantly higher.

[pacaro]

Or, looking at it from a different perspective, the fine is maximum fare by definition. Then you can pay the posted fare or decide whether the expected fare based on fine x probability of capture

[MandieD]

Fine on Nürnberg's system is 60 EUR - plus maximum fare.

[tacomonstrous]

That's how it works in Chicago.

[talmand]

If you use your main card at a major retail store it has just as much chance of being involved in a hacking incident as the online card.

[xKingfisher]

My dream for something like this is having everything on one card would let you manage the complexity a lot better.

Having one single interface to pay all bills and see spending breakdowns aggregated across all your cards, recommending the optimal order to pay down cards (if you are going to carry a balance).

Then on top of this, automatic fallback in case one card is declined, new numbers for every online transaction (not tied to a single provider).

You could even layer on top a simple scripting language to choose the card to be used for a given transaction. E.g. Use my rewards card when buying gas, but if I've maxed out the points then use the lowest interest card. Or round robin the cards to spread out the balance.

Or imagine a group outing where everyone can all combine into a single virtual card, with the ability to distribute charges however you want on the back end.

There are a ton of cool possibilities available (albeit very challenging to get right). And in theory, many people have at least 2 cards for redundancy purposes. Add in no fee rewards cards (Target, etc) and it will add up even for non hardcore points collectors.

[linsomniac]

One of the Plastc alternatives, I can't seem to find it now, was a device like Plastc, but also a yearly subscription fee, because they promoted the benefits being that the card would automatically switch between your available cards to optimize rewards.

At a gas station you would use the card that had the best gas points. At the grocery store it would switch to the card with the best grocery points...

I was never interested in it, because I don't really want to manage many cards, but I can see the appeal in it.

[huebnerob]

This sounds like a genuinely useful technology that will sadly never make it past the Big Credit gods. Card providers seem to make their profits when you're not managing your card usage so intelligently.

[gkanai]

Moneytree does this in Japan. You register all your accounts with it and you can see them all and manage them all in one interface.

[dboreham]

Or you could have zero cards given that everyone trots around with a supercomputer in their pants these days..

[Cpoll]

> It's nice to have one card as a backup, and some hardcore churners / points collectors are going to want 5 or 6 cards and use different cards for different categories... but they're real niches, it's not something that a mainstream, mass market consumer is going to want to manage.

I don't think this is the case. I think the average person has several credit cards (and is probably in the red on all of them).

On the other end of the spectrum is the financial-savvy user that also has multiple credit cards: One that gives them a gas discount, one for their Costco membership, one for restaurant cash-back, one for general purpose cash-back, one that waives the foreign currency conversion fee, etc.

[thaumasiotes]

> one that waives the foreign currency conversion fee

I have a credit card for precisely this purpose (it's also general-purpose cash back). It's not as useful as you might expect -- most places in China that accept foreign credit cards do so only through an agreement with a chinese bank that imposes a ridiculously disadvantageous exchange rate. (But there's no "conversion fee" -- the bank generously bills you in USD. How nice of them.) They don't seem to be able to bill your card in yuan directly even though the card supports it.

On the other hand, my debit card from the same bank that also has no foreign currency conversion fee works perfectly to get cash from ATMs.

[Cpoll]

I use that card for online shopping, where cash isn't an alternative. It's a fair point that exchange rates vary.

[voltagex_]

>my debit card from the same bank that also has no foreign currency conversion fee

I'm assuming they're making money on the exchange rate, then?

[thaumasiotes]

Quite possible, but when I checked it was something like 0.5%, more than an order of magnitude better than the "convenience" of having a chinese bank bill your card in USD.

I asked them (my bank) about it, got a response I don't remember, and decided I could live with 0.5%

[Symbiote]

There are several cards available in Britain which use the VISA/MasterCard spot rate, and add no further fees.

The cards tend to have no other promotion, whereas comparable cards might include travel insurance, or some gift vouchers when you sign up.

[thaumasiotes]

> having many credit cards is a complete pain to manage, because for each card you need to [...] change the address when you move

Why? I did that once, and it was a huge pain. But the cards work just as well no matter what they think your address of record is. Now I just don't change it.

[defen]

So you use your old address as your billing address? Aren't you worried about the new resident of your old address receiving official communications intended for you?

[jessaustin]

In USA, you can file change of address forms with USPS. Any and all financial firms will get that change within a few months, and over that period USPS will forward automatically.

[thaumasiotes]

No, because that is my parents.

If I was worried, I'd tell the payment cards to stop sending me mail.

[egeozcan]

What I don't understand is the need for multiple credit cards. I have a bank card (an EC-card) and I haven't used my credit-card since a month (other than automatic transactions).

[Theodores]

Yes you are sensible. But most people are not, they live in debt and shuffle it between the various cards. There are also people that just like collecting these things so they have a wallet full. Five cards should cover the personal, marital and work requirements in debit/credit flavours.

[chrisseaton]

Why would you ever use a EC card instead of a credit card? Credit card companies literally pay you to use their cards. Why turn down that money?

I carry two credit cards because one is American Express and pays me more but fewer places accept it, so I have a backup Visa that pays me a bit less but everywhere accepts it.

[MandieD]

A lot of merchants, like small hotels and restaurants, in Germany and Austria flat out won't take credit cards, because of the expense. They often will take EC cards and have the chip-and-PIN readers for it.

Americans never believe this until they've made a frantic run to an ATM after hosting a big dinner out or when they want to check out of that charming Gasthaus in a ski town.

When I first got over here in 2004, Media Markt (large electronics chain) didn't take credit cards, but did take EC-cards.

[Symbiote]

("EC card" implies Germany.)

The EU imposes a maximum 0.3% fee to the merchant for accepting a credit card. This is to avoid any unfair competition between cash and cards, and between poorer people not eligible for cards that get cashback.

The UK used to have cards giving 2-3% cashback, sometimes more, but they've all been withdrawn.

I don't bother with a credit card, since it's one less automatic bill payment and one less statement to check.

[chrisseaton]

You can still get 1.25% back in the EU. It's not a lot, but it's still just free cash.

https://www.americanexpress.com/uk/content/platinum-cashback...

I have a card that gets me miles instead of cash. I did the maths and worked out those were better value for what I wanted. Again, they're just free miles and I'm always flying with the airline anyway so I'm never making extra trips in order to spend them.

The genius of the system I use is that I have multiple credit cards (American Express, Visa) but actually they all just feed into the same account with the same bill to make managing them simple.