HTC Desire - Protecting Your Phone with a Screen Lock

Security
Protecting your phone with a screen lock
You can secure your phone by requiring a screen unlock pattern every
time your phone is turned on or every time it wakes up from sleep
mode (screen is off).
Press HOME > MENU, and then tap Settings.
Scroll down the screen, and then tap Security > Set unlock
pattern.
Read the information on the screen, and then tap Next.
Study the example pattern on the screen, and then tap Next.
Draw the screen unlock pattern by
connecting at least four dots in a vertical,
horizontal and/or diagonal direction. Lift your
finger from the screen when finished.
You must slide your finger on the screen to
create the pattern and not tap individual
dots.
The phone records the pattern. Tap Continue.
When prompted, draw the screen unlock
pattern again, and then tap Confirm.
Clear the Use visible pattern check box if you
do not want the unlock pattern to display on
the screen when you unlock it.
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