Keep a little bit of your loved one with you at all times. This would be an implant which has some external visual element which synchronized the heart beat between two humans. I imagine it as a progression of the wedding ring.
This jewellery would be synced across devices to the time each batch was finished production. At that time everyday each device would notify its user of it’s time and engage the group in a small action which allows the user to take comfort in the knowledge of each other person engaging in the same collective ritual experience as well as the production of the piece as a whole.Prototype
Haptic feedback cuff that tells you when you are standing exactly where someone else wearing it stood before.
A performative set of two body suits. That have standard keys of the keyboard as pads on them. Each pad can only be actuated by another suit-wearing person. With careful contortions of their bodies they have to live code a program.