______ mode of transmission requires the devices to be in a direct line of sight with each other.

Key Points

• Infrared communication requires the devices to be in a direct line of sight with each other.
• Unlike other wireless communication methods like Bluetooth and Wi-Fi, infrared communication cannot penetrate walls or other obstacles.
• Infrared technology is commonly used in remote controls, short-range communication, and data transfer between devices that are in close proximity and within the line of sight.
• It is a secure method of communication as the signal is confined to a specific direction and area.

Additional Information

• Bluetooth technology allows devices to communicate wirelessly over short distances without the need for a direct line of sight.
• Wi-Fi enables wireless network communication over larger distances and does not require line of sight.
• Infrared communication is highly directional and typically used for close-range applications.
• Infrared has a limited range compared to other wireless communication technologies.
• Despite its limitations, infrared is still used in specific applications due to its simplicity and cost-effectiveness.