An electronic device includes a first image sensor, a second image sensor, one or more image processing modules, and a display. The edge node is assigned a plurality of different IP addresses in accordance with quality of an in-network packet. Using the computed frame-based energies, the music mixer then computes one or more potentially optimal alignments of the digital signals representing each song based on correlating peaks of the computed energies across a range of time scalings and time shifts without the need to ever compute or evaluate a beats-per-minute for any of the songs. When the service provider completes processing of its portion of the transaction, an out-time timestamp is generated and appended to the message. The laser drilling method includes, after machining a through hole by radiating the laser beam to the workpiece, scanning with the laser beam centered around the through hole toward a radial direction while changing a radiation output of the laser beam.