Ever since 911, security has been very tight on flights to, and within, the United States. The kind of items you have been allowed to carry on to flights has severely limited, including extra batteries, or fuel cells, for your MP3 players.

Finally the US Department of Transportation has ruled that passengers are now allowed to bring approved fuel cells on board the planes.

This applies to items such as MP3 players, mobile phones and laptops.

Reports on the blog for Cnet claim that passengers on US flights will now be able to carry approved methanol fuel cells onto the plane with them, plus they’ll be able to take an extra two fuel cells in their luggage.

Fuel cells are still quite rare in electrical devices, with no mobile phones currently using them, though manufactures Motorola and Samsung are currently developing models that use the technology, and are expected to release them early in 2009.

The technology apparently offers a more energy efficient method for powering electrical devices, including mobile phones and MP3 players; with the main advantage being that there will no longer be a need to charge up batteries. When an old cartridge runs out, you simple replace it with a new one.

This move from the United States means it now follows the lead from Canada, China, Japan and the United Kingdom.

The long awaited Monster iPod bridge is now about to ship. The iPod wireless Audio Bridge named as iSoniCast is a device that features proprietary 2.5GHz technology, which enables music lovers to wirelessly stream music from their iPod to their home audio systems. Like many similar devices, this one also includes a dock connector-attached transmitter that enables the use of the iPod to act as a wireless remote.

This two-piece audio bridge features some minor changes, including intelligent frequency level that minimizes interference and high-bandwidth of 4Mbps streaming eliminating compression artefacts. It is currently specified to have a range of 30 feet and is priced at approx £50.