That would be an example of a generic (unpersonalized) key. It's a poor example because:
1. People don't lend out ATM cards.
2. Why wouldn't I simply transfer funds into her account?
3. Physical cash is unlikely to exist for much longer.
or use your car.
The generic (unpersonalized) key, again. Why wouldn't I simply tell my car to let my daughter use it?
2) Because I had to go to shop to pick up some Foo and meanwhile wanted her to get some money from the machine that was next door..?
3) um, ok. If you say so.
There are tons of reasons. I'm talking about how the world works right now. Not a hypothetical world that may or may not exist in the future.
If you were buying something from a physical shop, you wouldn't need money from a machine next door, because shops can give cash at the register from the customer's bank account. http://www.google.com/search?q=%22would+you+like+cash+with+t...
http://www.google.com/search?q=%22lent+my+atm+card%22
That would be an example of a generic (unpersonalized) key. It's a poor example because:
1. People don't lend out ATM cards.
2. Why wouldn't I simply transfer funds into her account?
3. Physical cash is unlikely to exist for much longer.
or use your car.
The generic (unpersonalized) key, again. Why wouldn't I simply tell my car to let my daughter use it?