Prosthetic arms are becoming more useful and convincing by the iteration. However, so far, they have not been able to alert users in times of their damage or in situations of pain. Therefore, a team of researchers has developed an 'e-dermis,' an external covering for prosthetic fingers that enables wearers to feel painful sensations. https://www.evolving-science.com/intelligent-machines/prosthetics-feel-pain-replacement-limbs-00702