Using AE2 and any wireless player charger, items are duped or wiped from wireless terminals.

1. Place any item into AE2 Wireless terminal crafting grid (must be outside the range of the wireless player charger)
2. Go inside the range of the wireless player charger
3. Drag item out of AE2 Wireless terminal either into the inventory or into AE2 Storage
4. Close menu and reopen -> The item will reappear in the crafting grid while also being wherever you put the original item

Only works on a server.