Abstract: The invention detects variation in the speed of the bicycle's drive chain using a sensor. Variations in chain speed are measured, with the resulting numbers displayed to be visible to the cyclist in real-time and/or saved for later downloading and viewing via computer. Metrics that can be calculated using variations in chain speed include: a smoothness index, which indicates how evenly the cyclist is applying force/power; chain speed variation to show the contribution of each leg to the overall force/power delivered; pedaling cadence; and a calculation of gear ratios. Some of these metrics can use inputs from additional sensors, such as a cadence sensor that is tripped by each revolution of the bicycle's crank arm, and wheel speed or GPS sensor for measuring the bicycle's speed.

Abstract: Methods and systems for executing an electronic transaction are provided, including parsing pages of a web server that execute a transaction to separate static from transactional content, identifying and storing rules for executing a transaction on the site, and presenting displays that enable a user to complete the transaction without interacting directly with the site, such as by interacting with a banner ad, electronic mail, cellular phone, or other simple interface.

Abstract: Methods and systems for executing an electronic transaction are provided, including parsing pages of a web server that execute a transaction to separate static from transactional content, identifying and storing rules for executing a transaction on the site, and presenting displays that enable a user to complete the transaction without interacting directly with the site, such as by interacting with a banner ad, electronic mail, cellular phone, or other simple interface.