Abstract: Various technologies described herein pertain to systems and associated methods that autocorrelate temporal signals and output an autocorrelated signal upon which vascular perfusion in tissue may be determined. The system includes a sampler that receives a first indication and a second indication at a lag time after the first indication from an indication generator. The indication generator can be a photodetector, such as in diffuse correlation spectroscopy applications of the system. The sampler generates and transmits first and second digitized indications to a processing unit of the system. The processing unit employs an algorithm that includes generating an autocorrelated indication based on the first digitized indication, the second digitized indication, and the lag time. The processing unit outputs the autocorrelated indication such that the autocorrelated indication may be used to non-invasively measure vascular perfusion in tissue.

Abstract: A wearable device, such as a smart watch, detects a movement by a user, and the wearable device may compare the detected user movement to known movement patterns to identify a social interaction. The wearable device may forward a notice to an associated mobile device, such as a smart phone paired to the wearable device, and the notice may identify the detected social interaction. The mobile device identifies another user involved with the social interaction, such as another user performing a movement similar to the movement detected by the wearable device. The mobile device may exchange contact information with another mobile device associated with the other user.

Abstract: A wearable device, such as a smart watch, detects a movement by a user, and the wearable device may compare the detected user movement to known movement patterns to identify a social interaction. The wearable device may forward a notice to an associated mobile device, such as a smart phone paired to the wearable device, and the notice may identify the detected social interaction. The mobile device identifies another user involved with the social interaction, such as another user performing a movement similar to the movement detected by the wearable device. The mobile device may exchange contact information with another mobile device associated with the other user.

Abstract: A device may receive registration information that identifies a target location associated with a toll-free data campaign. The device may receive location information that identifies device locations corresponding to mobile devices. The device may receive a resource identifier that identifies a resource requested by a mobile device. The device may determine, based on the location information, a device location associated with the mobile device. The device may determine, based on the resource identifier, the device location, and the target location, whether to provide toll-free access to the resource for the mobile device. The device may selectively provide toll-free access to the resource for the mobile device based on determining whether to provide toll-free access to the resource for the mobile device.