Breast self-exams are a touchy subject not only literally, but because many women doing them are poorly trained and either miss suspicious lumps or raise alarms on false positives. 
Eclipse Breast Health Technologies out of San Diego, CA is developing a device that the company hopes will make self-exams more precise and help women track suspicious lumps over time.
The Eclipse uses “low level photons” to image the breast, which we assume to mean infrared or near-infrared light frequencies that can penetrate tissue well below the skin. A woman would move the device across the breasts as the device does its sensing while recording a density map of the volumes. After finishing an exam the user would be able to compare maps from previous rounds and see whether any areas are getting denser and larger over time.
The company is raising crowdsourced funds on Indiegogo to help commercialize the device. Here’s a promo video to get you to help out with that:
Indiegogo: Eclipse – The First Smart Digital Self Breast Exam Device