A method for authenticating access to remote devices. The method includes receiving authentication data for authenticating a user for using a pointing device at an input of a Point-of-Sale (PoS) device for initiating of a transaction. The method includes receiving a user input that includes an authenticating input, the user input provided via the pointing device at an input device of the POS device, the authenticating input for authenticating the user for the transaction. The method includes accessing encoded data that is embedded in the user input, and determining a correlation between the authentication data and the encoded data. The method includes determining, based on the correlation and the authenticating input, authentication for initiating the transaction by the user at the POS device.