Screen lock bypassing techniques

Due to the increase in user awareness and the ease of functionality, there has been an exponential increase in the usage of passcode options to lock Android devices. Hence, bypassing the device's screen lock during a forensic investigation becomes increasingly important. The applicability of the screen lock bypass techniques discussed so far is based on the situation. Note that some of these methods may result in making changes to the device. Make sure that you test and validate all the steps listed on non-evidentiary Android devices. The examiner must have authorization to make the required changes to the device, document all steps taken, and be able to describe the steps taken if a courtroom testimony is required.

Currently, there are three types of screen lock mechanisms offered by Android. Although there are some devices which have voice lock, face lock, and fingerprint lock options, we will limit our discussion to the following three options, since these...