They say that the average visitor looks at a piece of art for 7 seconds – but what if it interacts with your movement and records how long you are there? You’ll probably stick around for a little bit longer.

Rows of motorized measuring tapes record the amount of time that visitors stay in the installation. As a computerized tracking system detects the presence of a person, the closest measuring tape starts to project upwards. When the tape reaches around 3m high it crashes and recoils back.

Each hour, the system prints the total number of minutes spent by the sum of all visitors. Commissioned by the Museum of Contemporary Art, Sydney.

Video courtesy of the artist and Bitforms Gallery NYC.