We demonstrate how to leverage Apple's Find My protocol, most well known as the underlying protocol of the AirTag, for arbitrary data-muling. This provides a new "infrastructure-free" deployment option, where areas with frequent human activity can take advantage of this zero-cost backhaul network. While there are severe limitations (e.g. no acknowledgement channel back to the sending device), Find My-based networking could still be a highly reliable backhaul with sufficient transmission redundancy and knowledge of deployment context.

In this paper, we provide the first broad measurement study of the operation, adoption, performance, and efficacy of Helium. The Helium network aims to provide low-power, wide-area network wireless coverage for Internet of Things-class devices. In contrast to traditional infrastructure, "hotspots" (base stations) are owned and operated by individuals who are paid by the network for providing coverage and are paid directly by users for ferrying data.

one pass per subpixel sample) through the hardware rendering pipeline.The resulting image is very high quality, but the performance degrades in proportion to the number of subpixel samples used by the filter function.This paper describes algorithms for accelerating antialiasing in 3D graphics through low-cost custom hardware.The rendering architecture employs a multiple-pass algorithm to perform front-to-back hidden surface removal and shading.Coverage mask evaluation is used to composite objects in 3D.The key advantage of this approach is that antialiasing requires no additional memory and decreases rendering performance by only 30-40% for typical images.The system is image partition based and is scalable to satisfy a wide range of performance and cost constraints.

This paper describes algorithms for implementing accurate rendering of CSG and transparency in a hardware 3D accelerator. The algorithms are based on a hardware architecture which performs front-to-back Z-sorted shading; a multiple-pass algorithm which allows an unlimited number of Z-sorted object layers is also described. The multiple-pass algorithm has been combined with an image partitioning algorithm to improve efficiency, and to improve performance of the resulting hardware implementation.