The user can encode their biometric data (fingerprints, DNA, etc.) into different objects (technology, weaponry, etc.), ensuring such things will only work in their hands.
The Isu (Assassin's Creed) specifically encoded the Pieces of Eden so that only their race can properly use them, though Desmond Miles' high concentration of Isu genes enables him to do so.
Omnitrix (Ben 10) can encode its main user's DNA into its system so only they can use it alone.
Mr. Carter (Gargoyles) possesses a pressurized palm-print trigger encoded to Vinnie Grigori's biometrics, ensuring only he can operate it.
Lawgivers (Judge Dredd) encode the DNA of the Judge authorized to use them, ensuring that only the authorized Judge can wield them without the gun exploding in their hands.
Each copy of the Venom symbiote of Earth-1610 (Marvel Comics) is encoded to a specific person's DNA; if bonded to an incompatible host, Venom begins consuming them almost immediately, forcing them to feed on others to sustain it or die themselves...
...in this case, as the Venom sample he used was encoded to his father Richard Parker's DNA, Peter Parker/Spider-Man can use it in relative safety and control it much better than others.
The Phantom Ruby prototypes (Sonic Forces) record the DNA of the first person who triggers them; thus, only that person can activate and use them.
The Dual Trace System (Trace Memory) encoded the DNA and biometric data of Ashley Robbins, ensuring that only she can use it.
The Chrono Morphers (Power Rangers Time Force) imprint the DNA of the wearer so that only the person in question or someone with similar DNA, such as a blood relative, can use them.
The Staff of One (Marvel Cinematic Universe) is encoded to the DNA of Tina Minoru, making her and her daughter Nico the only ones who can use it.
Videos[]
Ben 10 Alien Force Transformations HD 1080p-2
All Ben 10 Classic Transformations-2
Ben 10 VS Green Lantern (Cartoon Network VS DC Comics) - DEATH BATTLE!