[jsprogrammer]

>Can you go into specifics here? I'm not really understanding.

It sounds like a security deposit, of a type. For example, I had to leave one of my shoes at the front counter of a store that hosted a small gaming LAN in the back.

[homogeneous]

If that's the case then I'm confused as to where the cryptocurrency comes in. A security deposit works just as well with fiat cash as it does with cryptocurrency and in your example there is no money exchanged at all.

[jsprogrammer]

Money is only a token of value.

What if you were unable to accept cash (for example, you are on vacation)?

Wouldn't it be useful to make a deposit on a car, right before you use it?

What hasn't been explained here, are what guarantees the depositor receives.

[homogeneous]

I just don't see how ethereum (or even bitcoin) is useful here. If you make a deposit on a rental vehicle then the deposit will be returned when you return the vehicle as it was given to you. Why is a smart contract needed?

[jsprogrammer]

When you do not want to be there to physically collect the deposit?

[homogeneous]

Certainly a smart contract is not necessary for that.

[jsprogrammer]

Can you link to such an implementation?