great if it works, but...
When it woks it is one of the most useful Apps, in particualar an office environment where you frequently walk in and out and it locks and unlocks automatically without delay. However, even the pro mode in background fails too often and requires as a minimum to get out your phone and bring the App to the foreground, but even this does not always help. The weird thing is I have an iMac and a MBP next to each other (both are brand new 2016 models) and it frequently unlocks one but fails to detect the other one and keeps scanning - it is just not reliable in its current version. I hope updates will fix these relatively minor issues in the near future as otherwise I love this App.
stehlix about
Near Lock, v3.2