[AT&T, Rogers, Bell, Telus Samsung Galaxy S III] loserskater:
This will allow the PIN and Password unlock screens to be unlock as soon as the correct pin/password is input without having to press the enter key to submit.

**UPDATE** Updated for Lollipop

Thanks to [MENTION=1042140]tdunham[/MENTION] for updating this guide for 4.4.2. See here: http://xdaforums.com/showpost.php?p=54905593&postcount=54

We're going to be working with the following two files:

SecSettings.apk

android.policy.jar

KEY

REMOVE what's in BLUE

ADD what's in RED

SecSettings.apk

Navigate to /res/values/strings.xml

Add the following to the end of the file

<string name="quick_unlock_title">Quick Unlock</string>
<string name="quick_unlock_summary">Unlock as soon as correct pin is entered</string>

Navigate to /xml/security_settings_password.xml

<?xml version="1.0" encoding="utf-8"?>
<PreferenceScreen
xmlns:android="http://schemas.android.com/apk/res/android">
<PreferenceScreen android:persistent="false" android:title="@string/unlock_set_unlock_launch_picker_title" android:key="unlock_set_or_change" android:summary="@string/unlock_set_unlock_mode_password" />
<SwitchPreferenceScreen android:title="@string/dualclock_settings_title" android:key="dualclock_settings" android:summary="@string/dualclock_settings_summary" android:fragment="com.android.settings.dualclock.DualClockSetting" />
<CheckBoxPreference android:title="@string/with_cicle_title" android:key="with_circle" android:summary="@string/with_cicle_summary" android:defaultValue="false" />
<PreferenceScreen android:title="@string/lock_screen_options" android:key="lock_screen_options" android:summary="@string/lock_screen_options_summary" android:fragment="com.android.settings.LockScreenSettings" />
<CheckBoxPreference android:title="@string/quick_note_title" android:key="quick_note" android:summary="@string/quick_note_summary" android:defaultValue="false" />
<ListPreference android:persistent="false" android:entries="@array/lock_after_timeout_entries" android:title="@string/lock_after_timeout" android:key="lock_after_timeout" android:summary="@string/lock_after_timeout_summary" android:entryValues="@array/lock_after_timeout_values" />
<CheckBoxPreference android:title="@string/lockpattern_settings_enable_power_button_instantly_locks" android:key="power_button_instantly_locks" />
[COLOR="Red"]<CheckBoxPreference android:title="@string/quick_unlock_title" android:key="quick_unlock" android:summary="@string/quick_unlock_summary" />[/COLOR]
<PreferenceScreen android:title="@string/owner_info_settings_title" android:key="owner_info_settings" android:summary="@string/owner_info_settings_summary" android:fragment="com.android.settings.OwnerInfoSettings" />
</PreferenceScreen>

Navigate to /xml/security_settings_pin.xml

<?xml version="1.0" encoding="utf-8"?>
<PreferenceScreen
xmlns:android="http://schemas.android.com/apk/res/android">
<PreferenceScreen android:persistent="false" android:title="@string/unlock_set_unlock_launch_picker_title" android:key="unlock_set_or_change" android:summary="@string/unlock_set_unlock_mode_pin" />
<SwitchPreferenceScreen android:title="@string/dualclock_settings_title" android:key="dualclock_settings" android:summary="@string/dualclock_settings_summary" android:fragment="com.android.settings.dualclock.DualClockSetting" />
<CheckBoxPreference android:title="@string/with_cicle_title" android:key="with_circle" android:summary="@string/with_cicle_summary" android:defaultValue="false" />
<PreferenceScreen android:title="@string/lock_screen_options" android:key="lock_screen_options" android:summary="@string/lock_screen_options_summary" android:fragment="com.android.settings.LockScreenSettings" />
<CheckBoxPreference android:title="@string/quick_note_title" android:key="quick_note" android:summary="@string/quick_note_summary" android:defaultValue="false" />
<ListPreference android:persistent="false" android:entries="@array/lock_after_timeout_entries" android:title="@string/lock_after_timeout" android:key="lock_after_timeout" android:summary="@string/lock_after_timeout_summary" android:entryValues="@array/lock_after_timeout_values" />
<CheckBoxPreference android:title="@string/lockpattern_settings_enable_power_button_instantly_locks" android:key="power_button_instantly_locks" />
<CheckBoxPreference android:title="@string/lockpattern_settings_enable_tactile_feedback_title" android:key="unlock_tactile_feedback" />
[COLOR="red"]<CheckBoxPreference android:title="@string/quick_unlock_title" android:key="quick_unlock" android:summary="@string/quick_unlock_summary" />[/COLOR]
<PreferenceScreen android:title="@string/owner_info_settings_title" android:key="owner_info_settings" android:summary="@string/owner_info_settings_summary" android:fragment="com.android.settings.OwnerInfoSettings" />
</PreferenceScreen>

Navigate to /smali/com/android/settings/LockscreenMenuSettings.smali

.field private mPowerButtonInstantlyLocks:Landroid/preference/CheckBoxPreference;

.field private mQuicknote:Landroid/preference/CheckBoxPreference;

[COLOR="red"].field private mQuickUnlock:Landroid/preference/CheckBoxPreference;[/COLOR]

.field private mSignatureVerificationLevel:Landroid/preference/ListPreference;

.field private mTactileFeedback:Landroid/preference/CheckBoxPreference;

.method private createPreferenceHierarchy()Landroid/preference/PreferenceScreen;

WAIT!

WAIT!

You need to grab some ID's. Luckily they're already available so no need to compile, etc.!

There's only two.

:cond_5
const-string v4, "quick_note"

invoke-virtual {v3, v4}, Landroid/preference/PreferenceScreen;->findPreference(Ljava/lang/CharSequence;)Landroid/preference/Preference;

move-result-object v4

check-cast v4, Landroid/preference/CheckBoxPreference;

iput-object v4, p0, Lcom/android/settings/LockscreenMenuSettings;->mQuicknote:Landroid/preference/CheckBoxPreference;

.line 203
iget-object v4, p0, Lcom/android/settings/LockscreenMenuSettings;->mQuicknote:Landroid/preference/CheckBoxPreference;

if-eqz v4, :cond_6

const v4, 0x7f07004f

if-eq v2, v4, :cond_6

.line 205
iget-object v4, p0, Lcom/android/settings/LockscreenMenuSettings;->mQuicknote:Landroid/preference/CheckBoxPreference;

invoke-virtual {v3, v4}, Landroid/preference/PreferenceScreen;->removePreference(Landroid/preference/Preference;)Z

.line 208
:cond_6
[COLOR="red"] const-string v4, "quick_unlock"

invoke-virtual {v3, v4}, Landroid/preference/PreferenceScreen;->findPreference(Ljava/lang/CharSequence;)Landroid/preference/Preference;

move-result-object v4

check-cast v4, Landroid/preference/CheckBoxPreference;

iput-object v4, p0, Lcom/android/settings/LockscreenMenuSettings;->mQuickUnlock:Landroid/preference/CheckBoxPreference;

.line 203
iget-object v4, p0, Lcom/android/settings/LockscreenMenuSettings;->mQuickUnlock:Landroid/preference/CheckBoxPreference;

if-eqz v4, :cond_next

const v4, 0x7f070051 # type="xml" name="security_settings_password"

if-eq v2, v4, :cond_next

const v4, 0x7f070054 # type="xml" name="security_settings_pin"

if-eq v2, v4, :cond_next

.line 205
iget-object v4, p0, Lcom/android/settings/LockscreenMenuSettings;->mQuickUnlock:Landroid/preference/CheckBoxPreference;

invoke-virtual {v3, v4}, Landroid/preference/PreferenceScreen;->removePreference(Landroid/preference/Preference;)Z

:cond_next[/COLOR]
const-string v4, "visiblesignature"

invoke-virtual {v3, v4}, Landroid/preference/PreferenceScreen;->findPreference(Ljava/lang/CharSequence;)Landroid/preference/Preference;

move-result-object v4

check-cast v4, Landroid/preference/CheckBoxPreference;

iput-object v4, p0, Lcom/android/settings/LockscreenMenuSettings;->mVisibleSignature:Landroid/preference/CheckBoxPreference;

WAIT!

WAIT!

Did you replace those two ID's in that last section? Good. Let's continue.

.method public onPreferenceTreeClick(Landroid/preference/PreferenceScreen;Landroid/preference/Preference;)Z

:cond_8
const-string v5, "quick_note"

invoke-virtual {v5, v1}, Ljava/lang/String;->equals(Ljava/lang/Object;)Z

move-result v5

if-eqz v5, :cond_a

.line 503
invoke-virtual {p0}, Lcom/android/settings/LockscreenMenuSettings;->getContentResolver()Landroid/content/ContentResolver;

move-result-object v5

const-string v6, "lock_screen_quick_note"

iget-object v7, p0, Lcom/android/settings/LockscreenMenuSettings;->mQuicknote:Landroid/preference/CheckBoxPreference;

invoke-virtual {v7}, Landroid/preference/CheckBoxPreference;->isChecked()Z

move-result v7

if-eqz v7, :cond_9

move v3, v4

:cond_9
invoke-static {v5, v6, v3}, Landroid/provider/Settings$Secure;->putInt(Landroid/content/ContentResolver;Ljava/lang/String;I)Z

goto/16 :goto_0

.line 504
:cond_a
[COLOR="red"]const-string v5, "quick_unlock"

invoke-virtual {v5, v1}, Ljava/lang/String;->equals(Ljava/lang/Object;)Z

move-result v5

if-eqz v5, :cond_next

.line 503
invoke-virtual {p0}, Lcom/android/settings/LockscreenMenuSettings;->getContentResolver()Landroid/content/ContentResolver;

move-result-object v5

const-string v6, "quick_unlock"

iget-object v7, p0, Lcom/android/settings/LockscreenMenuSettings;->mQuickUnlock:Landroid/preference/CheckBoxPreference;

invoke-virtual {v7}, Landroid/preference/CheckBoxPreference;->isChecked()Z

move-result v7

if-eqz v7, :cond_quick

move v3, v4

:cond_quick
invoke-static {v5, v6, v3}, Landroid/provider/Settings$System;->putInt(Landroid/content/ContentResolver;Ljava/lang/String;I)Z

goto/16 :goto_0

.line 504
:cond_next[/COLOR]
const-string v3, "visiblesignature"

invoke-virtual {v3, v1}, Ljava/lang/String;->equals(Ljava/lang/Object;)Z

move-result v3

if-eqz v3, :cond_b

.method public onResume()V

:cond_2
iget-object v1, p0, Lcom/android/settings/LockscreenMenuSettings;->mQuicknote:Landroid/preference/CheckBoxPreference;

if-eqz v1, :cond_3

.line 438
iget-object v1, p0, Lcom/android/settings/LockscreenMenuSettings;->mQuicknote:Landroid/preference/CheckBoxPreference;

invoke-virtual {p0}, Lcom/android/settings/LockscreenMenuSettings;->getContentResolver()Landroid/content/ContentResolver;

move-result-object v4

const-string v5, "lock_screen_quick_note"

invoke-static {v4, v5, v3}, Landroid/provider/Settings$Secure;->getInt(Landroid/content/ContentResolver;Ljava/lang/String;I)I

move-result v4

if-eqz v4, :cond_8

:goto_1
invoke-virtual {v1, v2}, Landroid/preference/CheckBoxPreference;->setChecked(Z)V

.line 440
:cond_3
[COLOR="red"]iget-object v1, p0, Lcom/android/settings/LockscreenMenuSettings;->mQuickUnlock:Landroid/preference/CheckBoxPreference;

if-eqz v1, :cond_next

.line 438
iget-object v1, p0, Lcom/android/settings/LockscreenMenuSettings;->mQuickUnlock:Landroid/preference/CheckBoxPreference;

invoke-virtual {p0}, Lcom/android/settings/LockscreenMenuSettings;->getContentResolver()Landroid/content/ContentResolver;

move-result-object v4

const-string v5, "quick_unlock"

invoke-static {v4, v5, v3}, Landroid/provider/Settings$System;->getInt(Landroid/content/ContentResolver;Ljava/lang/String;I)I

move-result v4

if-eqz v4, :cond_quick

:goto_quick
invoke-virtual {v1, v2}, Landroid/preference/CheckBoxPreference;->setChecked(Z)V

.line 440
:cond_next[/COLOR]
iget-object v1, p0, Lcom/android/settings/LockscreenMenuSettings;->mVisibleSignature:Landroid/preference/CheckBoxPreference;

if-eqz v1, :cond_4

.line 441
iget-object v1, p0, Lcom/android/settings/LockscreenMenuSettings;->mVisibleSignature:Landroid/preference/CheckBoxPreference;

invoke-virtual {v0}, Lcom/android/internal/widget/LockPatternUtils;->isVisibleSignatureEnabled()Z

move-result v2

invoke-virtual {v1, v2}, Landroid/preference/CheckBoxPreference;->setChecked(Z)V

:cond_7
move v1, v3

.line 434
goto :goto_0

:cond_8
move v2, v3

.line 438
goto :goto_1

[COLOR="red"]:cond_quick
move v2, v3

goto :goto_quick[/COLOR]
.end method

That's it for SecSettings. Compile.