More than 6,000 geeks, app developers and Google fans flocked to San Fran

With a simple click on the Google Fit app, users can manage their daily workout information, ranging from number of steps to lose weight, meal intake and nutrition to getting a daily summary that can be uploaded for personal use or sharing.

"The service allows Google users to volunteer their health records either manually or by utilizing personal wearable devices to manage fitness, merging potentially separate health records into one centralized Google Fit profile," said Matias Duarte, Google's vice-president of design.

"But the key point is: you are in control, it's your decision whether to share it with the public or not."

The previous Google Health service was released to the general public in 2008 but closed in January 2012 due to lack of widespread adoption. The other concern was privacy-related issues, since it did encourage users to set up personal medical profiles online.

According to its Terms of Service, Google Health is not considered a "covered entity" under the Health Insurance Portability and Accountability Act of 1996, therefore HIPAA privacy laws do not apply to it.

Mike, a Chinese developer who declined to give his company name, said the most attractive announcement for him concerned the wearable devices.

"It's fascinating to see what Google has announced on wearable devices, which are definitely trendy for China, and something we could witness and learn," he said. "We are actually working on similar developments on our own platform, which is tailored for the Chinese market and end users."

Bruce, a Chinese software engineer attending the show, said what he saw about Google Auto made him want to learn more.

A company engineer said "Google Auto allows us to have a brand-new experience in connecting our cars, which has not happened in the Chinese market, yet it's definitely something the industry can utilize for the future. Since Android is the most used mobile operating system today, it gives all Chinese developers a positive signal on creating Android experiences within a strong ecosystem."

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