I LOVE this. I usually email myself for use cases like this but this is much simpler and efficient. Thanks for building this.
One observation: you should clearly label the pin as such. If I hadn't read people's comments here I wouldn't have known what to do.
I needed to send a long URL to my SmartTV browser, could not find anything easy. I normally use URL shortener service but this time I decided to give this a go.
I might add file sharing support soon, any feedback appreciated. Thanks.
A four digits PIN is too short to be secure. It looks easy to use brute force to pick one. For example copilot uses 9 digits like: 891 192 971
I don't understand what you can send. Only text like in a chat?
One other thing: you should really consider making this embeddable or as a wordpress plugin or browser extension. I'd be willing to pitch in and help with that if it something you're interested in. I've done a lot of extension and wordpress dev.