This explains the overview of Geolocation and newly introduced technology W3C Geolocation API, and also had Opera Browser demo example of Geolocation API

2. Nikhil Khokale

4. INTRODUCTION The World Wide Web Consortium (W3C) introduced the W3C Geolocation API as an interface to retrieve the geographical location information for a client-side device.

6. Geolocation API - seeks the user information to access the information What is GeolocationAPI ?

7. which devices can be used? Laptop or desktop Mobile devices such as PDAs and smartphones. All devices with an internet browser that supports the Geolocation API

9. IP Address

10. Mobile Devices

11. MAC Address

12. RFID (Radio-frequency identification)

14. HOW TO CHECK WHETHER BROWSER SUPPORTS GEOLOCATION ? if (navigator.geolocation) { navigator.geolocation.getCurrentPosition(successFunction, errorFunction); } else { alert('It seems like Geolocation, which is required for this page, is not enabled in your browser. Please use a browser which supports it.'); }

15. HOW YOU GET A LOC- BASED SERVICE 2 1 3

16. Traditional and new Privacy Issues of Web Browsers Cookies: Web Browser Cookies storing a unique user ID. Local Shared Objects: These are flash cookies and offer basically the same functionality as regular cookies. Document Object Model (DOM) Storage: advanced version of regular cookies and was introduced with HTML 5 Web Browser Footprint: consists of user agent information (browser ver., language), installed plug-in, fonts, etc to get accurate tracking of mobile user across multiple visited websites

17. Geolocation Example How will visitors to your site approve or deny sharing of their location information?

18. Screenshot of the slide, which shows your co-ordinates and a map centered on those co-ordinates.

19. APPLICATIONS The technology is already widely used in multiple industries, including e-retail, banking, media, education, travel, hospitality, entertainment, health care, online gaming and law enforcement, for preventing online fraud, complying with regulations, managing digital rights and serving targeted marketing content and pricing.

20. CONCLUSION The W3C Geolocation API provides an exciting and convenient way for Web developers to allow their applications to make use of the user's location. The capability to do it is more accurate now than past methods and provides a greater level of privacy to users than ever before. Now it's up to developers to make exciting applications that build upon this capability.

21. Some Samples