By this point in our technological development, we’ve learned a lot about healthy ergonomics for computer and phone usage, but cell phones, tablets, and even laptops? Not so much. These technologies are still new, and represent the new frontier of repetitive stress injuries due to technology. A Repetitive Stress Injury, or RSI, is caused by repeated movements which ultimately damage tendons, nerves and soft tissues. Pain in the thumb, forearm, wrist, and elbow can all be caused by using technology and the frequency at which we’re using it.