Web camera is a camera that regularly uploads new images to a web server for display on one or more web pages. The term web camera is also used to describe the low-resolution digital video cameras designed for such purposes, but which can also be used to record in a non-real-time fashion.

Wiegand Output Bar Code Card Readers includes Wiegand based 4-door controller, Wiegand reader input, logs event records and programmable operation. They control access to 4 door 26 bit based card.

Wireless Barcode Scanners are software dependent. These are handheld devices that allow to freely move about while scanning barcodes. The scanner then sends the data across a wireless connection to a base-station connected to a PC or laptop computer. They create a leap in efficiency by enabling real time data collection.

Wireless data collection system consists of three primary elements: miniature radios that are attached to the data output ports of electronic tools, a gateway that connects to a PC, and routers that extend the system's range and make the radio network more robust. It gathers data from electronic measuring tools and delivers it to a PC. It can significantly reduce human error in data recording.

Wireless LAN uses wireless transmission medium for data transfer operation. Wireless LAN is used rarely because of its high price, low data rates, and licensing requirements. It may need to support hundreds of nodes across multiple cells. The medium access control protocol should make efficient use of the wireless medium to maximize capacity. A typical coverage area for a wireless LAN may be up to a 300 to 1000 feet diameter. Mobile users use battery powered workstations that need to have a transmission and security for data transfer. The MAC protocol used in the wireless LAN should enable mobile stations to move from one cell to another. The MAC addressing and network management aspects of the LAN should permit dynamic and automated addition, deletion, and relocation of end systems without disruption to other users. The application of wireless LAN is LAN extension, cross building interconnect, nomadic access and Ad Hoc networking.