[kweks]

This can also be scammed due to the timeout "feature" in telephone systems. Ie, the scammer calls, tells you to call the number on your card. You believe they hung up, but they are still on the line. When you pick up your phone again, you're still contected, and they're playing a dial tone.

https://www.geekrant.org/2016/05/08/phone-scam-part-1/

[ams6110]

How many people still use landline phones? I don't know anyone.

[outworlder]

Now the real trick is to get this to work with cellphones :)