An identification number can be recovered without recovering a life. Eduardo Kac’s Time Capsule gives that distinction a physical setting: an implanted tag, a scanner and family photographs. The artist’s documentation records the live event at Casa das Rosas in São Paulo on November 11, 1997. Kac inserted the microchip beneath the skin of his left ankle.
The tag was passive RFID. A participant in Chicago could initiate a scan through a computer-linked device that pressed the local scanner’s button. Radio energy from the scanner activated the tag, whose numerical code appeared on a display. The implanted chip was not itself connected to the Internet. Nor was its stored identifier a measurement of a fingerprint, iris or other biometric trait.
The reading was followed by another action. In Art at the biological frontier, Kac recounts registering himself in a database intended for identifying lost animals, entering his own name as both animal and owner. That doubling makes classification part of the performance. The scanner produces a code; the registry supplies categories through which the code acquires a purpose. By occupying both roles, Kac exposes an awkward fit between the system’s intended use and the person submitting to it. The number does not determine that relationship on its own. The interpretation depends on fields, labels and an act of registration, all outside the implanted device.
Seven sepia family photographs accompanied the event. In his writing about the work, Kac develops the tension between lived memory and machine-readable storage. The association offers a way to read the installation without treating its mechanism as a prediction of every later identification system. The photographs ask for interpretation; a successful scan returns an assigned value. Neither operation can substitute for the other.
The apparatus also makes access concrete. Someone elsewhere could initiate a local action because a particular arrangement of equipment permitted it. Distance had been bridged through an engineered connection. That detail is more revealing than the vague idea of a body answering the Internet: it directs attention to who operates the reader and how the connection is established.
This source-based reading does not require a claim that Kac invented privacy concerns or anticipated today’s entire data economy. In the documented performance, he chose to make an identifier readable before an audience. The question that survives is about the authority granted to that reading. Knowing which record a number retrieves still leaves the difficult work of understanding the person to whom it has been attached.