A lot of people around here set up wireless doorbells that have literally no button authentication whatsoever, except a stupid numeric code. You push a button, it transmits its number unencrypted over radio, usually 433MHz band, and the bell rings.
My fren and I are thinking about putting a transmitter on a drone, flying it around, and ringing doorbells for the whole neighbourhood. Why, you might wonder?
Jingle bells, jingle bells,
Jingle all the way.
Oh! what fun it is to fly
A DRONE AND DRIVE EVERYONE CRAZY HAHAHAHAHAHAHAHAHAHAHAH