handprint is a medium through which people can write.
There are specific stations where people can go and write something short, ie a poem, quote, etc. People in the same geolocation could go up to these stations to view these writings. The surface is blank at first, but once a person presses their hand into it, a piece of writing from someone else will show up. Since handprint is location-specific, people can get the sense of the local community as each station will be unique to the community around it.