Cons to wearable technology include data accuracy, usability barriers, and charging. First, the accuracy of wearable technology especially watches is not always accurate. The information they collect is still in a developing phase where they can only get around what is true. Secondly, there are still many aspects that need to be improved to the wearable technology category such as design, functionality, bugs, and defects. All of these improvements can ruin the market for these items and they could fail.