Not sure if it would be possible. Depends on the devices at each end.
Most LAN, and certainly Ethernet, operates on the basis of packets of data, each packet is a discreet lump of data with surrounding data regarding where it's from, where it's going to, etc.
So, at each end, you need some sort of driver, which receives the data and creates the packet with the necessary packageing, and sends it on it's way, and at the other end something that receives the packet and extracts the data (and discards the packageing).
Do BOTH of the devices you want to link have the means to do this?
Most laptops etc have a network card built in, and drivers etc are in effect part of the OS, so many devices - no problem. But as I said, you need this ability at BOTH ends.
And of course, will the data you want to send allow for being broken into packets? If it's a single user network, i.e. only 1 sender and 1 receiver, then it's more possible that if there were multiple users where consecutive packets MIGHT not be part of the same complete message.