The story of the twall®

The history of the twall® was captured in a brochure (only available in German) by Frank Weiss, the inventor of the twall®, in 2014. Today, Frank Weiss operates with his office for design as frank & frei in HANGAR 3A in the north of Halle.


With the launch of twall® A in 2022, the history of twall® will be continued and raised to a new level.


The functional principle is very simple: LEDs that light up under software control must be switched off by touch. The reaction times as well as errors (for example incorrectly activated fields) are stored and serve to evaluate the reaction speed or concentration.


IMM electronics GmbH
Leipziger Str. 32
09648 Mittweida

+49 3727 6205-0