You can't snap a photo of your W-2 in TurboTax Online,
nor can you upload a photo you took with your device's camera.
However, you can take a picture via the mobile app, which will then upload to TurboTax Online. Please see the following TurboTax FAQ for instructions
on how to do so:
https://ttlc.intuit.com/replies/4875306
Please
see the following TurboTax FAQ for more information on how to import or
manually enter your Form W-2:
https://ttlc.intuit.com/replies/3389204