Is it possible to have two Windows Phone 8.1 apps communicate?

Question

I'd like to be able to have my apps send some messages between each other. Ideally, this would happen in the background without being intrusive to the user.

What techniques are available for doing this? Reading the Interprocess Communications page, I see that something like Mailslot would be perfect.

Thanks.

Answer 1

No. Windows Phone apps cannot communicate directly with each other except through specifically designed contracts such as Sharing.

Answer 2

That's limiting and disappointing.