[modo_]

The state of the art [1] for body fat estimation using depth sensing is actually quite good (R2 value of 0.78).

The hard part will be accurately extracting the anthropometric features from the front/side/back images that Halo captures. There's a chance they would initially launch an iPhone only app and leverage the face scanning depth sensor.

[1] https://www.nature.com/articles/s41430-020-0603-x