IPhone security app suggestions?

Lately i have been looking around for apps on my iPhone that help to keep my phone safe from any intruders, I'm looking for an app that can do the following

- *Takes a photos on the lock screen of anyone who didn't type in the correct password
- Shows where about my iPhone is on the map using Wi-Fi or Phone Network (Optional as I already have an app for this)

I need to app to be free as I can't use anyone's credit card to buy the app and also I would prefer if the app had a good layout and looked real, I would like the app to either start with the lock screen or have its own lock screen so when I turn my phone on or use the top button to unlock it then it will be locked while the app is running.

Thank you x

Added (1). I forgot to add this, when the app takes photos it sends them to my email that I provided

You can easily use the Find My iPhone facility to see your iPhone on a map over Wi-Fi or 3G, but as far as taking a photo of someone on the lock screen without them knowing would probably require you to jailbreak. This can be quite buggy and doesn't always run smoothly. I'd just wait for the iOS 7 update to come out and see what it brings. You never know.

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