Hi @Vesnik, let me see if I can help out here.
I am not really sure on what you mean by "Unlocking Sony by using your photo on screen another smartphone", could you please elaborate your question a bit? There is a function in Smart lock called Trusted face, enabling you to use facial recognition to unlock the device, but I am not really sure if that is what you mean.
Please do elaborate and let me know if I have misinterpreted your question in any way!
