They may be small, but having certain tools and gadgets on your keychain can come in handy when you least expect it. Here are ...

but the best light is the one you have on you. That's what makes the tiny new Ysmart Bullet2 a great choice out in the wilderness: it's small enough to fit on a keychain or belt loop, and it turns ...

Explore the fascinating process of creating a rechargeable LED keychain light. Witness each intricate step, from assembling materials to the final product, designed for convenience and portability.

That's what a smartphone is for, surely. Not quite, thinks Akaso, whose new Keychain camera is small, light, magnetic and captures video in 4K. It's for filming everything anywhere. That means ...