15ish years ago,I had a pen that could draw on special paper, and do interesting things.
Anoto (https://www.anoto.com) holds the IP on the proprietary pattern of dots used on the paper. Sure, you can make your own pattern, but Anoto's technology allows the pen to not only know where it is at on the paper (allowing it to capture pen strokes), but it also knows which piece of paper it is writing on...out of the gazillion unique sheets of paper the technology allows. So, cool stuff, but all depending on the good graces of one company. I used to work for one of their partners (now out of business), and a large part of our secret sauce was allowing one to print any document, but with the dot pattern printed under your Word doc/map/PDF. IOW, print anything and now you can write on it. Imagine printing your city map from MapGIS/ESRI, mark it up with (for example) fire hydrants, dock the pen. Now your GIS database is updated with fire hydrant locations, and you didn't have to carry a pricey PC or tablet into the field.
You can still buy the technology via LiveScribe, but I don't know how it is used in enterprise scenarios, if at all anymore.
Anoto (https://www.anoto.com) holds the IP on the proprietary pattern of dots used on the paper. Sure, you can make your own pattern, but Anoto's technology allows the pen to not only know where it is at on the paper (allowing it to capture pen strokes), but it also knows which piece of paper it is writing on...out of the gazillion unique sheets of paper the technology allows. So, cool stuff, but all depending on the good graces of one company. I used to work for one of their partners (now out of business), and a large part of our secret sauce was allowing one to print any document, but with the dot pattern printed under your Word doc/map/PDF. IOW, print anything and now you can write on it. Imagine printing your city map from MapGIS/ESRI, mark it up with (for example) fire hydrants, dock the pen. Now your GIS database is updated with fire hydrant locations, and you didn't have to carry a pricey PC or tablet into the field.
You can still buy the technology via LiveScribe, but I don't know how it is used in enterprise scenarios, if at all anymore.