S
WAutographer
WContactless smart cardA
WIBeacon
WManufacture Modules TechnologiesB
WMicrosoft SenseCam
WPersonal and Ubiquitous ComputingC
WSmart card
WSmartglassesD
WSmartwatch
WSUBE cardE
WTracking system
WUltrasound IdentificationF
WWearable computer
WWearable technology