Sad news has arrived via Scott Looney:

I have the sad news to report that STEIM’s founder Michel Waisvisz died peacefully in his home last night "after fighting the mean cells in his body for eight months" - which i assume is a reference to the cancer he had been battling. Michel developed one of the very first alternative controllers in the 1970’s called the Hands and subsequently the Krakdoos - aka the Cracklebox. He subsequently founded STEIM and served as its head for 27 years, and inspired many musicians and improvisers around the globe.

Obituary at STEIM:

Michel Waisvisz

I imagine STEIM will accept gifts in his honor, but haven’t yet seen details. Our condolences to the friends and family of a brilliant visionary.