The main purpose of the digital certificate is to ensure that the application belongs to the entity to which the certificate was issued. The RealNetworks digital certificate does not guarantee that a signed application is safe to run, but rather informs the user that the software was digitally signed by RealNetworks and verified by a trusted Certificate Authority (CA).

RealNetworks delivers digital entertainment services to consumers via PC, portable music player, home entertainment system or mobile phone. Real gave the Internet a voice in 1995 with the first audio streaming solution for the Internet, RealAudio. Continued innovation led to generations of RealVideo and what is now known as RealPlayer, which is downloaded millions of times per week. Unifi lets you manage all your photos, music and videos in one place. It works across multiple devices, so you can enjoy your memories wherever you are, whenever you want, and even share them with family and friends on Facebook. Real is the largest creator, publisher and distributor of casual games. Scrabble, Uno, SuperCollapse, Sally's Salon are well-recognized titles available from Real on GameHouse, Zylom and Atrativa.
www.realnetworks.com
About (from RealNetworks at www.realnetworks.com)
“RealNetworks creates products and services that make it easier for people to access and enjoy digital media on the devices and platforms they choose to use. Whether it's music, movies, games, live streaming video, or programs that help them keep close to the people who matter most, Real thrives on giving people the fresh and entertaining experiences they deserve—whenever, wherever they want. We do this in two ways: directly to consumers through our applications and services; and through partnerships with well-established businesses and mobile operators throughout the world.
Many remember Real for giving the Internet a voice back in 1995. That year marked the introduction of the first audio streaming solution for the Internet, RealAudio®. Continued innovation led to generations of RealVideo® and what is now known as RealPlayer®, which has now been downloaded more than 100 million times at a continued rate of millions of downloads per week. Today, RealPlayer® stands as one of the most popular applications on the market, due in part to continuous improvements in delivery quality and product features, in addition to its broad compatibility across a wealth of devices.”