You may have heard of a Picatinny Smart Rail or Powered Rail which is the NATO STANAG 4740/AEP-90.
The T-Worx Intelligent Rail offers centralized weapon enabler power and control. The intelligent rail is Mil Std 1913 compatible but features an embedded, ruggedized printed circuit board (PCB). The battery is located in the butstock and connects to the rail via jumpers which follow contours of the lower receiver. Alternatives include a pistol grip battery or a mount directly to the rail.
Technically, it’s a power AND data rail but most users have concentrated on the ability to centrally power their enablers. The new Gateway Node seen in this photo, attached to the 3 o’clock rail position allows all of the enablers attached to the rail to communicate with other item’s in the Soldier’s network like an End User Device. It is compatible with the U.S. Army’s Intra-Soldier Wireless (ISW) protocol.