The digital signature service that has been launched on the Aadhaar platform is called

The Aadhaar-based digital signature service launched on the platform is called eSign.

There is no Aadhaar signature service by the name DigiSignDesk.

OnlineSignDesk is not the name of any Aadhaar digital signature service.

GoogleSignIn is an authentication feature by Google, unrelated to Aadhaar signing.

eSign lets an Aadhaar holder sign a document electronically after online authentication.

It removes the need for a physical cryptographic token to sign digitally.