Advantages and disadvantages of infrared electronic whiteboard?

Advantages and disadvantages of infrared electronic whiteboard?

The advantage of infrared electronic whiteboard is that there is no need for a special pen for induction operation. Induction operation can be realized as long as fingers or other opaque objects. Another feature is that when operating, the objects can only enter the induction area without touching the whiteboard. I don't know if this is an advantage. According to the operation habits. The disadvantage of infrared electronic whiteboard is that it is easy to be affected by the environment, such as direct sunlight or dust shielding of infrared tube, which will affect the operation. In addition, the procurement cost will be higher than that of electromagnetic electronic whiteboard.