Cell GPS / cell tower information in Rails app

I'm developing a Rails app that would run on a mobile browser. Is there any way that I can get the GPS or cell tower information for the cell phone user? Are there any cell phone SDKs that integrate well with Rails?

Thanks in advance.

You would really need to check with the APIs of the mobile operating system and apps on on the cell phone(s). Most mobile platforms allow you to hook into the other apps hosted on the phone themselves. Last, if the mobile platform has a browser you need to find the API and restrictions that the browser has for talking to the operating system of the phone.

JW