A system for introspection and annotation of electronic design data includes a tracked probe that interacts with an electronic circuit, a tracking system, schematics, design files, or models for the circuit, electronic design system software, and a user interface. The probe has a sensor that tracks the position of the probe within the circuit. The tracking system receives data from the sensor and translates it into coordinates reflecting the location of the probe within the circuit. The software uses the probe coordinates to locate the position of the probe on the circuit schematic, identify the circuit component at the probe location, and display information about the identified component. The displayed information preferably includes an annotated version of the circuit schematic. The system may include a measurement or instrumentation device, the probe may include at least one parameter measurement device, and the display may include information derived from the parameter measurements.