I'm a little surprised Google hasn't don't this but I guess they have give gmail. Sign into google and it will ask me to approve on my gmail app. Not entirely

I'm a little surprised Google hasn't don't this but I guess they have give gmail. Sign into google and it will ask me to approve on my gmail app. Not entirely sure I like these "authenticate on from another device". Just yesterday I mis-placed my phone. I wanted to sign into iCloud.com for use "find my phone" feature from my PC. It required me to use apple's authentication via a code sent to the phone, the exact thing I was looking for! :(