It is - because the two devices don't need to be 'in direct sight' of each other. Infra-red devices transmit & receive by way of a narrow beam of light. Bluetooth uses radio waves - which will simply bounce around a room until detected.
You can live without them, they just make things a lot more convenient.
One can do many things with a Hewlett Packard Vivera system. Printing is made much simpler and more convenient, by allowing a user to complete a wide variety of printing related tasks, all from one machine.
more convenient
Bluetooth operates using radio waves while infra-red communication works on fast pulses of light. If you have to send data from one mobile to the other using infra-red technology, you will have to keep both the mobiles facing each other. In other words the sensors of both the devices must be in each other's immediate line of sight.If something comes in the way of the two mobiles devices, the message or data will not pass through. Bluetooth technology however can pass through walls. You can send messages, data files, audio- files, video-files etc from your mobile to the other person in the next room, as long as the other mobile is within the radius of 10 meters. Infrared also only works between two devices at a time while Bluetoothcan work with as many as mobile devices as you want.
Yes. Bluetooth v2.1, more exactly.
a bluetooth headset can be used to answer or make calls. may other bluetooth have more options like music, voice command and many more.
Metric System is more convenient to use.
Do you consider notes more convenient or other forms of money more convenient?
It is very convenient to pay by credit card. You'll find these meals quick and convenient to prepare. Fruit is a convenient source of vitamins and energy. A bicycle is often more convenient than a car in towns. I'll call back at a more convenient time.
trains are more convenient than buses bcuz these are more spacious, speedy and relaxing.
More convenient than what and for what? If you mean, more convenient than a giant squid as a way of powering your netbook, then yes, DC voltage is more convenient. AC also works for that if you have an AC adapter. But if you mean, more convenient than cinnamon as a flavoring for coffee, than no, I think cinnamon is both easier and tastier.
She helps when it is convenient. The new stove makes it much more convenient for her to cook.