They allow for the measurement of voltages and waveforms using oscilloscopes or multimeters without risking shorts.

Small wire loops soldered into the board, allowing a probe clip to attach securely.

Use fine-tipped "needle probes" to avoid bridging two pads, which could cause a permanent short circuit.

During mass production, automated "bed-of-nails" testers use these points to verify that every trace is connected and every resistor is within tolerance.

Always connect your probe’s ground lead to a known-good ground (often a KMGD point itself) before measuring active signals. The Future of PCB Testing

Identifying these points on a crowded PCB can be challenging. They typically appear in three forms: