@dpc
@littleshibe
Attaching a message to an individual coin/token and sending it to someone, Then person who receives token is able to read message.
Perhaps a password, Lets say I make a token on counterparty that someone can purchase then when they redeem it they receive a password token that would include the password attached.
Sort of. Let's say you make a 2 shibetokens. You could grant/limit access to something using those tokens in a couple of different ways. But both of those tokens would have the same access. So if you gave one shibetoken to me and another to your dog we would both have access to the same stuff. To give us separate levels of access we would need different token types, meaning a whole new asset (shibetoken & shibetoken2)
Or different amounts. See TCV (Token Controlled Viewpoint) for reference. @Adam and the LTB nettwork is working on solutions like this.
With regards to sending data on the bitcoin network: it is possible, but the data is public. If it is a one-time transfer you could encrypt it so that only the owner of the recipients public address can decrypt it, but it is not comfortable and both ends need to do non-standard things to get it to work.
If the idea was to attach meta-data to tokens that is not private sensitive passwords then one could use technologies like Colored Coins.
If someone else knows where to link to these things, feel free. (I'm at work and can't spend too much time digging atm.)