Face and PD measurements

Have a bank card ready. Start your camera, look straight at it and hold still: the AI reads your face, then asks you to hold the card flat on your forehead. The card is a known size, so your pupil distance, face width, canthal distance and bridge width are measured at the card's scale, and the frames that fit you follow. No card at hand? A rougher estimate without the card is one click away. It runs on your own device; nothing is uploaded.