Device proximity and calibration could absolutely be an issue in that video. In regard to their solution (having to whitelist devices based on user feedback),

Device proximity and calibration could absolutely be an issue in that video. In regard to their solution (having to whitelist devices based on user feedback), I feel it's going to be a long, uphill battle. It's been tried before via a device knowledgebase and open-source analyzer app [1], but unfortunately, Android is just too ubiquitous for this to be feasible long-term (without direct AOSP support). My suggestion: the devs should create a free, trial version of the game that takes advantage of all of the hardware it requires. If it checks out, offer the sale. [1] https://code.google.com/p/android-analyzer/ https://code.google.com/p/android-analyzer/