Transfer of ergopoint control

Transfer of ergopoint control

My assistant and I both have Ergoppoints, which we find awesome. A couple of times now though we've found that my mouse is working on / controlling her device and hers is doing the same on mine even though our respective mice are about 2 meters away from the other's device.

When we are working from home each of our mice controls our own devices.

Any suggestions of how to avoid this? Our work around has been to swap mice for the day (and swap them back before we go home - which works but I'd like to solve the underlying issue if possible.