Switch to “chalk” and the feel modifications, providing a reasonably accurate—though significantly significantly less unpleasant—essence of marking up a blackboard. The stylus can pull off these impressions because of a custom made chip inside, as well as strategically put haptic motors that subtly shake and rattle with hyper precision.  From https://simonyxuwy.newsbloger.com/29406119/the-2-minute-rule-for-safety-alarms-for-seniors