Smart Lock Lets you Open Door With Your Mobile

It could mean the end of panicking when you've forgotten your keys.

A US firm has launched a 'smart lock' that can let you into your home using a mobile phone - and you don't even need to take the phone out of your pocket to open the door.

The August lock costs $249 and can even be set to automatically let in friends or workmen.

August was created by technology entrepreneur Jason Johnson and industrial designer Yves Behar, and the gadget finally goes on sale and in Apple Stores this week. 

'We have worked tirelessly over the past two years to build a sophisticated and simple way for you to manage access to your home,' the firm said.

'With a smartphone and intuitive iOS and Android mobile app, August will allow you to send a virtual key to anyone you choose to invite to your home.' 

The August lock is made of 'durable anodized aluminium' and can be activated and managed using a mobile app and online.

It is connected to the existing door lock and is battery-operated. 

The makers claim that it takes just 10 minutes to install.

The designers claim that the August lock package includes deadbolt adapters and faceplates that work with around 90 percent of locks on the market in the US.

August works with any Bluetooth-enabled smartphone, although the apps will only launch on iOS and Android to begin with.

The encrypted locking technology issues registered devices, or invited devices, with unique codes that can't be copied.