Any work you do, any invention or system that does works better than the existing system you're going to have to assume it will be:

shut down or forced regulation over it
honed to monetised / used against you

There is no other way it seems currently unless fitting it in existing structure pleases you and you think that will work (similar to using facebook to try get people off facebook or using even more money to try and get out of money).

Question that might be useful:
- How to keep it low key while reading people?
- How to keep it just between people rather than detection systems?
- How to keep it available / working offline?
- How can government use it against other people once they get their hands on it or emulate your good idea / mechanism?