Let me elaborate. With my character, Valkyrie, I've been on a story arc for her for at least a year (ooc time) - more, if you count the arc where she learned to master telepathy - wherein she has been on a mission to invent "telepathy tablets." Effectively, she is trying to make a tabletted spell (like teleports) that holds a heavily modified version of the NPC Contact spell and can be used by anyone of any magical ability.
Before you cry ROFLinvention, let me assure you that it's not. I don't blame you if you want reassurance, because I understand that a lot of people rofl-invent things and just say, "Look at this ultra cool stuff I made! My character is smart, so he figured out how to make it!" and that sort of thing can make you wary of "inventions" quickly. This is not like that. This project has been both long-term pursued and significant specifically by my character because she's a mute who can only communicate auditorilly through telepathy, and has found that there's a stigma against telepathic magic because of its dangers. Thus, she seeks to assuage that stigma. As for proof that it hasn't been a simple everything-falls-into-place slap-together, I've had her keep a semi-detailed journal of the entire process and every technical, logistical, and financial hurdle she's faced over time, which you can read here if you want more information.
So, lets say one day in the near future Valkyrie succeeds in creating a magical formula that can be compressed into a tablet and used by any layperson, then starts making them available for other characters to buy. I think the most successful possible outcome would be for Valkyrie's telepathy tablets to be acceptable publicly in RP and known about or used by at least a small number of players. My question is this: would you ever have one of your characters use a telepathy tablet? Why or why not?
Here are some important specs you might want to consider:
No magical ability required. There would only be some basic use instructions; they would function primarily by being broken on the user's body.
They would cost roughly the same, maybe a little more than, teleport tablets. So, say, out of the reach of the poorest of peasants, affordable in small numbers by the working class, and comfortably affordable as needed by the wealthy upper class.
The spell will be designed to be exclusively audiovisual, so it would be useless in combat except maybe just to wig somebody out.
There may or may not be a time limit for a conversation, this hasn't been established since they aren't finished. (And it's a spell, so your minutes don't roll over!)