The Bond Touch, Bond Touch More, Bond Touch 4, and Bond Touch Lite are all interoperable — meaning that anyone using these products can bond with each other and send and receive touches across devices.
The difference is that with Bond Touch 4, Bond Touch Lite, and Bond Touch More, users can connect with up to 3 partners at the same time, while the original Bond Touch is limited to 1:1 connections.
Please note that Bond Touch 2 is not compatible with the multi-bonding feature.