Amongst other applications, Strain Gauges can be found in the Trackpoints commonly associated with IBM/Lenovo's Thinkpad laptops: https://patentimages.storage.

Amongst other applications, Strain Gauges can be found in the Trackpoints commonly associated with IBM/Lenovo's Thinkpad laptops: https://patentimages.storage.googleapis.com/91/5c/4b/e86a79d7f7d198/US6509890.pdf https://patentimages.storage.googleapis.com/91/5c/4b/e86a79d...