In Vanilla Minecraft! 

Just 1 Command Block needed. [/give PLAYERNAME minecraft:command_block] 

Here is the Command: 


http://pastebin.com/v0u04r5v

Please: 
1) Dont act like its your own work. 
2) Credit Me 
3) Have fun :) 

[b][i][u]Minecraft More Security with only 1 Command Block by Minecrafter010101 [PM] NamlessCommand [YT][/u][/i][/b] 

[list][*]Adds Keycard, Keycard Reader, Alarm System, Remove Alarm System, Reset Alarm, Sword Scanner Remove Sword
Scanner, Electric Fences, Remove Security Cams, Security Wests, Alarm System Vision Helmets and an Read me Book where you can simply "install" the 1 Version in under 1 Minute.
[*]Only 1 Command Block needed 

[*]Fully Automatic Building 

[*]Delete Sign 

[*]Easy to Use 

[*]Multiplayer Friendly 

[*]Extremeley Awesome with my First Version you can find here:
[*][url=www.planetminecraft.com/blog/minecraft-security-with-only-1-command-block/]http://www.planetminecraft.com/blog/minecraft-security-with-only-1-command-block/[/url]
[*]Many Things have been added.

[/list]  
Subscribe and Fave if you like this. There will be More! 
;D 
By 600 Views there Will be a Version 3!

If you have Ideas just write them in the Comments. 

Thank you: 
-that my last Creation is still on the [u][i][b]TOP BLOGS[/b][/i][/u]!!!!! 
-For my Subscriber: 
Smorez 
7rgskm 
Yadobashi 
cory-morin 
Bloodscar246 
potatobeencrafted 
manuelfuentesg 
filipkinjan
EnderMaster397
TeamRabbitAlec
Kickrad
RedYog
-for the 300 Views!!! So here is the Version 2!