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Is such an app possible for Android? (plz read)
Range Finder App
An app that accurately measures distance from your smart phone/tablet. Something like this already exists (Smartmeasure), however it’s clunky, troublesome, and obscure. I’m aiming to have this app be used naturally amongst anybody who constantly needs to measure
Create a work-around a focused laser beam, which is traditionally used in range finders. that a phone can't provide, you would be unable to get any sort of meaningful reading. Perhaps an algorithm that compares the scale of items it finds in the camera to a stored set, and give approximations.
Use the phone’s sound capabilities to measure distance
Use the phone’s map/compass capabilities to measure distance
Use a phone's accelerometer to track the phones's movement, and take a series of image with the same camera as you point the phone towards a target to measure distance