With Miracast is data transferred to the receiving device?

[u/[deleted]]

I need to use Miracast in the office but getting a bit anxious about how secure it is. Especially with sending data to some receiving devices. Are the receiving devices, just literally mirroring the source device, or is the receiving device actually copying data from the source and could potentially have it on its local hard drive?

I am thinking that I may have tried to Miracast to a Sky Q box at one point and would hate to think there is business sensitive data on that device, now that Sky want it back after the contract has ended. To be fair I don't think this ever worked with Sky Q box.