A spy pen camera can be one of the best security investments that are worth spending on. It is basically a mini camera that is compressed and put inside a pen. It is meant for discreet recording without the knowledge of others. However, the technology behind the manufacture of these gadgets is very interesting. Digital video recording or DVR technology enables one to increase the quality and ease of access in audio and video formats.

In spy pens the format of recording is generally AVI or 3gp which are very well supported by not only computers but also some of the modern mobile phones. One can also directly stream the audio and video feed from the spy pens over the internet to any other device. Most of these devices come with in-built storage capacities that allow recording for around 12 to 20 hours. They also facilitate recording small; clips or one full big video.

Broadband telephone service has improved a lot in recent years and is giving serious challenge to traditional land-line phones. The basic difference is while the former involves packet switching techniques, the later involves circuit switching. With more easy availability of broadband connection, broadband telephone service is really taking off in a nice way.

Broadband telephone service facilitates one to make phone calls and receive phone calls with the help of a router. It uses VoIP technology to send and receive the call. The sound quality is comparable to regular phone calls. Calls can be made from one computer to another or from one computer to any phone by broadband telephone services. Also this gives more benefits like call waiting and voice messages at cheaper costs than traditional phone plans. They even have monthly plans while normal land-line phones generally involve a year long contract with the service provider.