Coinbase: The first transaction in each Bitcoin block ... that lets anyone send encrypted messages to you without having to exchange a secret key first. QR Code: A scannable code that in the context ...

QR code phishing has emerged as a serious threat. A retrofit variation that uses cryptographic security and can even work offline might just be the solution.

The ubiquitous QR ("quick response") codes that appear on everything from parking pay stations to soda cans and promotional ...

Add one of these 5 tried & tested Amazon promo codes and deals to your order to save on technology, fashion, homeware and more. All coupon content is created by Tom’s Guide. We may earn a ...