Is It Possible To Put A Password on LG Phones?

I'm upgrading my phone this month (I have a VX8100 in horrible condition) and I really want a phone that I can put a password on. Is there maybe software or a hack that offers this ability? Does anyone know if the VX10000 Voyager will come with this option?

---

› See More: Is It Possible To Put A Password on LG Phones?

I figured out how to lock my 8100. Menu -> Tools -> System -> Security -> Lock Phone. However, once I unlock it, it doesn't go back to being locked once I let the phone sit for a few minutes. I can set it so it does every time I turn on and off the phone, but that's a hassle and I'm sure not good for the phone. Any suggestions?