[Elsdebo]

Honestly, it sounds handy. Practical uses would be for opening garage doors/points of entry. People have done much worse.

That's quite hilarious. Thank you for sharing.
I've seen people use the device to hack intercoms, sloppy RFID doors, airconditioning... In combination with SE the options are legion.
In Russia a system called Mifare or something is used for public transport. This device can copy/emulate such a card. Magnificent.
There are some stores that use RFID protection.