There are plenty of fancy self-defense tools available on the market these days. You can even buy iPhone cases with a stun gun or pepper spray built-in. The HemiSERE Titanium Lapel Knife is a tiny tool you can wear under your collar or anywhere else on your shirt. It weighs only 4 grams, with a thickness of 1.3mm.
You can stick the knife to the back of your credit card or store it inside your smartphone case.
[where to get it]Your iPad is already capable of acting as a compact laptop for serious work or…
Meet the LIFEHACKR Bottle: a smart water bottle that helps you stay hydrated. It also…
Your iPhone or other favorite handheld device has a limited storage space, so if you…
3D printers have gotten a lot easier over the years. The latest models come ready…
Getting stuck outside without a strong signal is not ideal. Most outdoor enthusiasts rely on…
AI is being integrated in many everyday devices, including earbuds and glasses. The R3 Bluetooth…