Arnold Jan Quanjer

Credit Card Oracle


The fragile design and feeble construction is a comment on the supposedly robust quality of intelligent systems that in fact are very vulnerable to malicious intends and influenceable by human biases.  The installation sonifies credit card data into a noisy sound language. Electromagnetic information on credit cards is brought to life by sliding them along tape heads from modified radio cassette players. Credit cards produce sound because the black stripe on the back of a credit card stores data the same way that audio tapes do.




After visiting a botanical garden in Italy Goethe became convinced that he could discover some simple unity among the great variety of vegetation.

He conceived the idea of an original or archetypal plant, an Urpflanze ("Primal Plant ") from which all plant forms can be derived.

In an essay and a poem, where he explained the diversity of plant forms as an ongoing transformation of leaves, Goethe bridged the gap between the poetic and science.


A project in collaboration with Lisa van Leenen and Tamara Pinos




The primal plant exists as an idea but the idea or image of the primal plant is not a finished concept. We should create conditions allowing the idea of the primal plant to grow and try to convey some of the poetic and scientific qualities of the primal plant without giving an exact answer to what the primal plant is.




We want to create an explorative installation. In a process that is similar to an assembly line we will explore the idea of the primal plant. But instead of assemble a finished product we will deconstruct flowers a study the parts. We will bring all the data that will emerge from our study in a symbiotic interplay with a deconstructed version of the poem of Goethe.

The data (the scientific) and the words of the poem (the poetic) will blend into an ever-changing presentation that will convey the symbioses and interplay of the poetic and the scientific.

The presentation can be digital, a physical construction or a combination of both.


The Heartbeat Pulse Matcher


The Heartbeat Pulse Matcher is a small wearable device that can be put on like a glove. One or two or more people can wear such a devise. A pulse sensor detects their heartbeat.


A project in collaboration with Lisa van Leenen


Just imagine


You are dancing on the dance floor in your favorite club with your heartbeat pulse matcher around your wrist. Dancing with yourself is amusing, but dancing together with someone is much more amusing. You are getting a signal of your pulse matcher. This means that there is someone around you who transmits his or her heart beat to you and before you know it, you are not dancing alone anymore.


An indication about the way two heartbeats merge with each other


The Heartbeat Pulse Matcher is a small wearable device that can be put on like a glove. One or Two or more people can wear such a devise. A pulse sensor detects their heartbeat. On the rhythm of their heartbeat a vibrating pulse signal is send to a miniature vibe board that makes contact with their skin.


The heartbeat pulse matcher also contains a transmitter/receiver. The heartbeat of a participant is automatically transmitted. A heartbeat can be received and interpreted by the other heartbeat pulse matcher. The signal is only detected when the two participants are within a certain distance from each other. The incoming pulse signal is combined with the heartbeat of the receiving participant. The result of the comparison is translated in an experience that is perceived through vibrating pulses that are a mix of the two heartbeats. It gives an indication about the way the two heartbeats merge with each other.


Data streams


  • The heartbeat is perceived by the pulse sensor and send to the Lilypad. The lilypad puts out a signal to the miniature vibe board. You perceive a vibrating sensation on the skin in the same rhythm as your heartbeat.
  • A transmitter sends a wireless signal that contains a heartbeat of a participant wearing a heart beat pulse sensor.
  • Thereby other participants wearing a device can receive the heartbeat of a second participant wearing a heartbeat pulse sensor
  • These rhythms combine to a new beat that can be sensed by both participants.





Arnold Jan Quanjer Msc

Senior Lecturer and Researcher User Experience Design

The Hague University of Applied Sciences

The Netherlands