When I updated iOS on my iPhone, I was forced to choose a six-digit passcode instead of a four-digit one. Is there any way to go back? As part of its drive to increase security on Apple devices, the ...

🛍️ Amazon Big Spring Sale: 100+ editor-approved deals worth buying right now 🛍️ By Dan Moren Published Mar 18, 2015 10:00 PM EDT Add Popular Science (opens in a new tab) Adding us as a Preferred ...