Forgot login pattern on my tablet I have forgotten the Patten to get in my tablet. It is an Android system. The brand is IMPRESSION, model no.: i10-LE.
Suppose your tablet is in WiFi or in airplane mode? And you can't unlock it without? There's a way to solve this:


Windows PC
Install android SDK (http://developer.android.com/sdk/index.html)
Connect the device with USB cable
Install USB drivers


Open CMD:

Change directory to the android SDK platform tools (for example C:\Program Files\Android\android-sdk\platform-tools)

Type following commands in CMD:


adb devices (verify device is identified by pc. If not reconnect
device and try again. it should display “device” with a serial no)
adb shell
cd /data/data/com.android.providers.settings/databases
sqlite3 settings.db 
update system set value=0 where name='lock_pattern_autolock';
update secure set value=0 where name='lock_pattern_autolock'; (for
some devices update “system” is enough but I had to update “secure”
too) 
update system set value=0 where
name='lockscreen.lockedoutpermanently';
update secure set value=0 where
name='lockscreen.lockedoutpermanently';
.quit
exit
adb reboot


Now your device should be unlocked. If not do this step too:


adb shell rm /data/system/gesture.key