Notes concerning “Multitouch”
drag-and-drop calculator for touch devices
2015-09-03 (5 minutes)
Interactive calculator
2018-04-26 (16 minutes)
Two-thumb quasimodal multitouch interaction techniques
2018-04-26 (11 minutes)
Quasimode keyboard
2018-07-14 (24 minutes)
First impressions on using the μMath+ calculator program for Android
2019-05-21 (14 minutes)