Using ‘Lock’ in iphone could be irritating; even bothersome to an extent that one might choose not to use it, in spite of its need. That is because, accessing an application in iphone requires a lot of pressing and swiping. In spite of the fact that the process is fast; with the passcode ‘ON’, it can become tiresome.
Let us break it down with an example:
1. Pressing the sleep button to wake it up
2. Swiping to unlock
3. Pressesing 4 keys to enter the pass-code
Total interactions in this case = 6 (To see the face of the app!)
If one thinks of switching the Pass-code, ON/ OFF only when needed; then one is automatically forced to remember these actions. Considering the frequency of these actions, this task flow amounts to a usability problem and can force users to not use the lock.