E-meter

The E-Meter (also electropsychometer and Hubbard Electrometer) is an electronic device used in Scientology that allegedly "registers emotional reactions". After claims by L. Ron Hubbard that the procedures of auditing, which used the E-Meter, could help heal diseases, the E-Meter became the subject of litigation. Since then, the Church of Scientology publishes disclaimers declaring that the E-Meter "by itself does nothing", is incapable of improving health, and is used solely for spiritual purposes.