[getmetheswan]

The fact is that the solution needs to evolve as the kid gets older. This specific solution - a card based one - is best suited for teens.

What if your 14 year old is going to soccer camp in another state for a month? Handing them a jar stuffed with $400 of cash is not a great solution.

[intellegacy]

If your 14 year old is going to another state for a month then your 14 year old isn't going to be doing chores and you won't be needing to tip them for said chores.

I agree with theinternetman that this idea was ill-conceived and easily replicable.