A data-centric approach can use either a stack or a queue to keep track of seed pixels that need to be checked. Source: Internet
A Deadness Board is used to keep track of deadness on all four balls. Source: Internet
A device called the surface gauge was used in order to keep track of the stop-motion animation performance. Source: Internet
All the important sports metrics are included, GPS, heart rate, ABC (altimeter, barometer, compass), as well as motion tracking so you can keep track of your steps and other activity. Source: Internet
A live registry is also in place to keep track of licensed midwives. Source: Internet
A list of transactions means you can easily keep track of transactions. Source: Internet