A personalized drinking cup assembly comprises a lid which includes a mouthpiece, and includes a fingerprint reader located thereon to enable the user to access and use the mouthpiece to drink from the cup. In some embodiments the cap comprises a top portion and a side wall extending perpendicularly therefrom, and the fingerprint reader is located on the side wall. In some embodiments, the cap further comprises a handle, on which the fingerprint reader is located. In use, the user utilizes the fingerprint reader in order to access the mouthpiece for drinking from the cup. Once the fingerprint reader is read and the user is identified as the owner or authorized user of the cup, the mouthpiece will be opened for consumption thereby.