One of the first apps I install on my phone is ZXing's Barcode Scanner, specifically so I can scan QR codes. On Android, it's hands-down the easiest way to pos

One of the first apps I install on my phone is ZXing's Barcode Scanner, specifically so I can scan QR codes. On Android, it's hands-down the easiest way to post WiFi details for a LAN party or similar (no idea how to do it with iPhones — maybe Apple sells some $99 AirWiFiScanner thing?). I'll scan 'em to see if there's useful info there. I'm a little concerned that there may be some way to do something malicious with a QR code, but I don't believe I've ever seen a POC. I'll also use them to set up TOTP. Incredibly easy. Honestly, I wish that they were used more often. In my experience they work flawlessly.