Simply speaking, biosensor apply Micro Electro Mechanical Systems (MEMS), semi-conductor manufacturing and bio-medical science technologies to mount the biological and medical micro instruments on the silicon chips or glasses. Those sensors can test diseases, blood, DNA, and perform other clinical diagnosis.
Take the biosensor above for example. It is required to inspect whether the electrical wire on the bio chip continues or becomes discontinuous during manufacturing process. It is also required to record the discontinuous situation during inspection. However, it is not easy to do the inspection and take pictures at the same time. Therefore, documentation has become a challenge during manufacturing.