As far as apps go for Symbian for some reason unlock screen apps seem to be really popular. (seefor more unlockers) Because everyone loves them so much, here is a review on another one, Slide Unlock one of the better unlockers in the Ovi store.
It’s developer describes it this way:
SlideUnlock is a unique sliding unlock tool for your device, it will lock screen after a period of idle time and unlock it by sliding the screen or shaking the phone, there are also various utility shortcuts on the locked screen, so you can launch the application directly from it. It ’s fully customizable and easy to use.
Although I haven’t unlocked my phone by shaking it, by using this app I can vouch for the rest. There are six unlock screens with this app and you can move the time bar, and the power status bar. (having the power status bar is an option.)
As you can see from the screen shots above there are two screens that do more than just unlock, you can get to messages, home screen, dialer, contact list, and the web. This is very handy, however it left me wishing that you could change them into any app you wanted.
You can also change the time bar style, the font size, text transparency, and you can even password protect your phone with this app. Overall it is a very useful unlock app and really the only thing that left me wanting more was the ability to change the apps that you can access from the unlock screen.
There is a free or a trial version here. This is good for 20 unlocks and will give you a good idea whether or not it is for you.
If it is, you can either hit the upgrade button or you can go here and buy it for $1.99.