How to login using google account in a device from another device

I am working on an embedded device with very limited user interface. I am looking for a way to login to Google account to access my Google photos of the user. But there is now way for me to enter the user creds in the device. I am looking for a way to login to Google from another device, my mobile, on behalf of the device. like in the case of YouTube TV, which could be logged in from a remote device.

Is Google providing a way to do this? How could it be integrated to an application? please help.