IPO
        SHARE AGREEMENT

       

      Argyle
        Security Acquisition Corporation

      200
        Concord Plaza, Suite 700

      San
        Antonio, Texas 78216

       

      Rodman
        & Renshaw, LLC

      330
        Madison Avenue

      New
        York,
        New York 10017

      Attn: 
        Edward
        Kovalik

       

      Gentlemen:

       

      The
        undersigned stockholders of Argyle Security Acquisition Corporation (“Company”),
        in order to facilitate an initial public offering of the securities of the
        Company (“IPO”), hereby agree as follows:

       

      
        	 	
                A.

              	
                Purchase
                  of Shares.
                  The undersigned will purchase an aggregate of 125,000 units in
                  the IPO.
                  Such purchases shall be in the names and amounts set forth on Schedule
                  A
                  hereto.

              


      

       

      
        	 	
                B.

              	
                Voting
                  of Shares.
                  If
                  the Company solicits approval of its stockholders of a Business
                  Combination, the undersigned will vote all of the shares of the
                  Company’s
                  common stock acquired by the undersigned (i) in the IPO, (ii) upon
                  the
                  exercise of options currently held by the undersigned and (iii)
                  in the
                  aftermarket, in favor of the Business Combination and therefore
                  waives any
                  redemption rights with respect to such shares. As used herein,
                  a “Business
                  Combination” shall mean an acquisition by merger, capital stock exchange,
                  asset or stock acquisition, reorganization or otherwise, of one
                  or more
                  operating businesses in the security industry selected by the Company,
                  and
                  “IPO Shares” shall mean the shares of the Company’s common stock issued in
                  the IPO.

              


      

       

      
        	 	
                C.

              	
                Waiver
                  of Liquidation Distributions.
                  The undersigned hereby waives any rights to, or claims against,
                  the
                  proceeds being held in the Trust Account relating to the IPO Shares
                  in the
                  event of a liquidation of the Company upon the Company’s failure to timely
                  complete a Business
                  Combination.

              


      


      
        
          
          

        

        
          
          

          
            

          

        

        
          
          

        

      


       

      IN
        WITNESS WHEREOF, the undersigned have executed this Agreement as of the __
        day
        of _________, 2005.

       

      
        	 	 	 
	 	ARGYLE
                NEW VENTURES L.P.
	 
 	By:
                	 Argyle
                Communications Inc., its general partner
	 	By:  	 
	 	
                
Name:
                Bob Marbut
	 	Title 


      

       

      
        	 	 	 
	 	ARGYLE
                JOINT VENTURES
	 
 	 
 	 
 
	 	By:  	 
	 	
                
Name:
                Bob Marbut
	 	Title 


      

       

      
        	
              	 	 
	 	By:  	 
	 	
                
Bob
                Marbut


        
           

        

      

      
        	 	 	 
	 	By:  	 
	 	
                
Ron
                Chaimovski


      

      
         

         

      

      
        
          
          

        

        
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