Abstract: Point-of-sale transaction processing is disclosed. In one innovative aspect, there is a point-of-sale system. The point-of-sale system includes a device manager configured to receive a token as input. The token may be associated with a mobile device. The token may also be associated with a particular provider (e.g., store, bank, loyalty program). The system includes a payment information engine configured to map the token to payment information such as a credit card track based at least in part on the received token. In the system, the device manager is further configured to transmit the payment information to a point-of-sale application.

Abstract: A lightweight asphalt roofing product wherein the asphalt-based coating has a specific gravity less than 1.0. A lightweight filler is used which has an effective specific gravity in the range of 0.10-0.50 and is present in the coating in the range of 3%-25% by weight of the filled coating. In a preferred embodiment, the filler particles have hollow, gas filled inclusions, and comprise expanded perlite particles or expanded permicite particles.

Abstract: A thermally efficient process for the expansion of perlite ore is described. The inlet port and burner of a perlite expansion chamber (preferably a vertical expander) are enclosed such that no ambient air can enter the chamber. Air and fuel are metered to the burner with the amount of air being controlled such that the fuel/air premix contains at least enough air to start and maintain minimum combustion, but not enough to provide stoichiometric combustion. At a point immediately above the burner, additional air is metered into an insulated enclosure surrounding the expansion chamber where it is preheated by the heat passing through the chamber walls. This preheated additional air is then circulated back to the burner where it provides the remainder of the air needed for combustion, normally full combustion.