Dag Kittlaus, the cofounder of Apple?s new voice-recognition search and personal assistant Siri, has left the company just weeks after the iPhone 4S debuted.

Mr. Kittlaus joined Apple in 2010 after the manufacturing giant bought his company. According to reports, Mr. Kittlaus? departure was amicable.

Apple?s Siri
Currently, Mr. Kittlaus is at Palindrome Advisors, a company that helps nonprofits use mobile and social technology and Cabrini Green Tutoring Program, per his LinkedIn page.

The iPhone 4S also comes with Siri, an intelligent assistant that uses voice recognition technology to answer questions posed by users that was introduced by Apple.

Apple's Siri is unique to the new 4GS device.

The technology is a powerful harbinger of the future use of mobile devices.

Siri is proof that the power of voice and the ability to contextualize a statement or request will be something that users will do daily on their mobile devices.

How it works
Siri on iPhone 4S lets consumers use their voice to send messages, schedule meetings and place phone calls.

Users can ask Siri to do things just by talking into their mobile device.

According to Apple, Siri understands what users say, what they mean and even talks back to them.

With pre-orders for the new iPhone 4S breaking previous records, consumers once again showed that they will embrace new Apple products regardless of how the tech community receives them.

Recently, Apple reported yesterday that pre-orders for iPhone 4S broke a record with 1 million orders in a single day.

Consumers are ordering the new iPhone 4S regardless of the fact that it is not a 4G device and it does not have an embedded NFC chip to enable mobile payments ? unlike Google?s Nexus S 4G.

The strong performance for Apple?s newest iPhone mirrors similarly strong results for previous Apple products, including the original iPhone and the iPad.

Final Take
Rimma Kats is staff reporter on Mobile Marketer, New York