His work at the cross roads of mobile interaction and public displays is very exciting. In particular he investigates interesting concepts related to visual codes – some aspects to these ideas are discussed in “Swiss Army Knife meets Camera Phone” . His new prototypes are really cool and I look forward to see/read more about them.
We realized that there are many areas where we have common interests. Perhaps there is a chance in the future to work together on some of the ideas discussed!
 Swiss Army Knife meets Camera Phone: Tool Selection and Interaction using Visual Markers. C. Kray and M. Rohs. (2007) In "Workshop on Mobile Interaction with the Real World at Mobile HCI 2007". Singapore, September 9, 2007.