What is the primary limitation of infrared (IR) technology?

The primary limitation of infrared (IR) technology is its limited transmission range. Infrared signals are typically confined to a short range, often effective only within a few meters before they lose strength or are obstructed. This limitation can hinder the ability to communicate over longer distances and restricts its use in applications requiring wider coverage.

IR technology relies on line-of-sight communication; therefore, obstacles, such as walls or even furniture, can significantly degrade the signal or cause it to be entirely blocked. Because of these characteristics, IR is primarily used in environments where close-range communication is adequate, such as remote control devices or certain wireless peripheral communications.