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Your phone minus the distractions
(getbrick.app)
This is a most excellent place for technology news and articles.
This seems like the thing that could be accomplished with just a QR code or NFC tag. Sleep As Android (alarm app) allows you to set up alarms so that you must get up and scan a QR code or tap a NFC tag in order to stop an alarm - no brick needed. It's not a huge leap to expand that functionality to other use case scenarios (maybe this already exists, I haven't looked into it). It seems kind of silly to have a service and retail device for something that can be handled locally on-device with BYOH for the unlocking mechanism.
edit: others have pointed this out already