1. Chung Man Ho Willims Chow Man Kei Gary Kwok Pak Wai Lion

2. Content Palm OS Blackberry OS Window Mobile Symbian iPhone OS Google Android

3. Palm OS Introduction developed by Palm, Inc. designed with a touchscreen-based graphical user interface. provided with a suite of basic applications for personal information management.

4. Palm OS Authentication SecurID Token client and libraries Encryption encrypt all data when the device is locked or only encrypt the specific data Use a specialized secure storage program that maintains its own encrypted database

5. Windows Mobile Introduction developed by Microsoft used in smartphones and mobile devices It is superseded by Windows Phone 7.

6. Windows Mobile Authentication Having different security providers each one contains different authentication and cryptographic schemes. NTLM security support provider (SSP) Kerberos SSP Encryption achieved by employing a file-based encryption filter. A master key for the encryption is protected with the user’s device lock PIN

7. BlackBerry OS Introduction a proprietary mobile operating system developed by Research In Motion provides multitasking and supports specialized input devices

8. BlackBerry OS Authentication Support individual security passwords between four and fourteen characters in length designed to ensure that only the BlackBerry smartphone user can access the information Encryption All the data that runs on the BlackBerry network will be encrypted (keying) and requires a secret code known only by RIM to encrypt or unlocked. Also have other software can do encryption

9. Symbian Introduction Open source operating system designed for smartphones and maintained by Nokia Symbian platform is the successor to Symbian OS and Nokia Series 60.

10. Symbian Authentication Symbian has a built in password lock which user can have numerous options for keypad autolock. Encryption Number of encryption software that can be used in Symbian Almenta cellular encryption uses PKI key scheme to enable user authentication

11. Android Introduction initially developed by Android Inc based upon a modified version of the Linux kernel

12. Android Authentication A built in lock with 3x3 grid of dots Android's authentication scheme is that it makes use of muscle memory Encryption Mobile phone using Android does not have any encryption for the device, since it can't support device encryption mechanism, so it cannot secure data on the phone safely.

13. IOS Introduction iOS (known as iPhone OS prior to June 2010) is Apple's mobile operating system. support other Apple devices such as the iPod touch, iPad and Apple TV Apple does not license iOS for installation on third- party hardware.

14. IOS Authentication built in auto lock function failed for more than 10 times, IOS will automatically delete all data in it. Encryption Using device passcode as an encryption key New data protection APIs can be used for custom and commercial apps so that business-critical information is protected even if a device is compromised.

15. Comparison

16. Comparison cont’ Palm OS Blackberry OS Window Mobile Symbian iPhone OS Google Android

17. Suggested Mobile OS Google Android Price reasonable Open source development Suitable for mobile workforce

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