iOS (jailbroken): FlashCam sticks two extra buttons on your iOS lock screen that give you quick access to your camera and an LED torch.
To install FlashCam, just open up Cydia and go to Manage > Sources. Add the
http://cydia.wrightscs.com repository, then search for FlashCam in the Cydia database. You’ll find it in your Settings app, where you can tweak where it shows up on the screen, which camera app it uses, and more. Note that this conflicted with some of my custom lock screen tweaks, so if you have a custom lock screen, your mileage may vary with this app.
Haven’t jailbroken your iPhone, iPad or iPod touch just yet? Head on over to our jailbreaking guide for the complete instructions.