Bluetooth Devices Question:

Connectivity:
One-to-one connections are made by infrared devices, while Bluetooth devices can form when all the devices have identified themselves to each other.

Versatility:
Bluetooth devices could work together; where as infrared devices need to be specially designed for specific devices.

Range:
Class 3 Bluetooth devices works at about 30 feet; while infrared is rated at 3 feet.

Orientation:
Infrared devices are direct line-of-sight; where as Bluetooth devices could communicate even in times of separation by obstacles. Security: Bluetooth is less secure than infrared due to the omni directional nature; where as infrared signals could only be intercepted by a device.