What about a handcuff for your finger? Or a self defence ring with a tiny button that quickly releases the built-in blade? Links to all the gadgets you can find below!
Iris Ring with mechanism:
Handcuff Ring:
Piston Ring:
Star of David Mechanical Ring Box:
Spinning Mechanical Dice Box: ||
Self Defense Ring:
Smart Buildings - Trend Magazine originally published at Smart Buildings - Trend Magazine
