1. All devices running Android N and above have Vulkan. Although, I still fail to see why OpenGL ES could not be used as a fallback. 2. Android being open sour

1. All devices running Android N and above have Vulkan. Although, I still fail to see why OpenGL ES could not be used as a fallback. 2. Android being open source does not make it unsuitable for safeguarding patient data. I'm surprised you would even mention this as it undermines your entire argument. The open source nature of Android actually makes it more secure because you have more eyes on the code. Security through obscurity is always less secure. 3.Google could also provide a variation of the Tango SDK to support normal devices.