Exibit 4.3 





THESE WARRANTS HAVE NOT BEEN
REGISTERED UNDER THE SECURITIES ACT OF 1933, AS AMENDED. THEY MAY NOT BE SOLD, OFFERED FOR
SALE, PLEDGED HYPOTHECATED OR OTHERWISE TRANSFERRED IN THE ABSENCE OF (i) AN EFFECTIVE
REGISTRATION STATEMENT WITH RESPECT TO THE WARRANTS UNDER SUCH ACT, OR (ii) AN OPINION OF
COUNSEL REASONABLY SATISFACTORY TO THE COMPANY THAT SUCH REGISTRATION IS NOT REQUIRED. 



A4S SECURITY, INC. 



BRIDGE WARRANT 



Warrant to Purchase
Shares of
Common Stock 



        This
certifies that pursuant to the terms of this Common Stock Warrant (this “Bridge
Warrant”), for value received, A4S Security, Inc., a Colorado corporation (the
“Company”), hereby grants to [NAME] (the “Holder”), or its
registered assigns, the right to purchase from the Company during the Exercise Period
specified in Section 1 below, up to [x,xxx] shares of the Company’s common
stock (“Common Stock”) at an Exercise Price of $6.00 per share (the
“Exercise Price”). All capitalized terms not defined herein shall have the
meanings given to them in the Financing Terms Agreement dated April 12, 2005 pursuant to
which the Holder acquired this Bridge Warrant. 



         1.       
          Exercise of Warrant. 



		1.1        Exercise
Period.  







		1.2        Except
as restricted as set forth in Section 1.3 below, Holder may exercise this Bridge Warrant,
in whole or in part, at any time and from time to time commencing October 21, 2005 and
prior to 5:00 p.m. (central standard time) on July 18, 2010 (the “Expiration Date”);  







		1.3        Procedure
for Exercising Bridge Warrant.  







		    (a)                                    This
Bridge Warrant will be deemed to have been exercised at such time as the
               Company has received all of the following items (the “Exercise Date”):  







		    (i)                            A
completed Exercise Agreement, in substantially the form set forth in Exhibit A hereto
and as described in Section 1.4 below, executed by the           person exercising all or
part of the purchase rights represented by this Bridge           Warrant (the “Purchaser”);  







		                                    (ii)        This
Bridge Warrant; 
















		    (iii)                            If
this Bridge Warrant is not registered in the name of the Purchaser, an
          Assignment in the form set forth in Exhibit B, evidencing the assignment
          of this Bridge Warrant to the Purchaser and the consent of the Company thereto;
          and  







		    (iv)                A
check payable to the Company in an amount equal to the product of the           Exercise
Price multiplied by the number of shares of Common Stock being           purchased upon
such exercise.  







		    (v)                            In
the case of a “Conversion Right” pursuant to Section 2.3 herein,           the
“Exercise Date” shall be the date the Company receives the notice           of
conversion or the date specified by Holder in the notice of conversion.  







		    (b)                             Certificates
representing shares of Common Stock purchased upon exercise of this                Bridge
Warrant will be delivered by the Company to the Purchaser within 10 days
               after the Exercise Date. Unless this Bridge Warrant has expired or all of
the                purchase rights represented hereby have been exercised, Company will
prepare a                new Bridge Warrant, substantially identical hereto, representing
the rights                formerly represented by this Bridge Warrant which have not
expired or been                exercised. The Company will deliver such new Bridge
Warrant to the person                designated to receive it in the Exercise Agreement.  







		    (c)                             The
Common Stock issuable upon the exercise of this Bridge Warrant will be
               deemed to have been issued to the Purchaser on the Exercise Date, and the
               Purchaser will be deemed for all purposes to have become the record holder
of                such Common Stock on the Exercise Date.  







		    (d)                             The
issuance of certificates for shares of Common Stock upon exercise of this
               Bridge Warrant will be made without charge to the Holder or the Purchaser
for                any issuance tax in respect thereof or any other cost incurred by the
Company in                connection with such exercise and the related issuance of
shares.  







		    1.4        Exercise
Agreement. The Exercise Agreement will be substantially in the form set forth in Exhibit
A  hereto, except that if the shares of Common Stock are not to be issued in the name
of the Holder, the Exercise Agreement will also state the name of the person to whom the
certificates representing the shares of Common Stock are to be issued, and if the number
of shares of Common Stock to be issued does not include all the shares of Common Stock
purchasable hereunder, it will also state the name of the person to whom a new Bridge
Warrant for the unexercised portion of the rights hereunder is to be delivered.  







		    1.5        Fractional
Shares. The Company is not required to issue any fraction of a share of Common Stock
upon exercise of this Bridge Warrant.  















		    1.6        Securities
Acts Compliance. As a condition to its delivery of the certificates representing the
Common Stock, the Company may require the Purchaser to deliver to the Company, in
writing, representations regarding the Purchaser’s sophistication, accredited
investor status (as defined in Rule 501 of Regulation D promulgated by the U.S.
Securities and Exchange Commission), investment intent, acquisition for his, her or its
own account and such other matters as are reasonable and customary for purchasers of
securities in an unregistered private offering, and Company may place conspicuously upon
each certificate representing the Common Stock a legend restricting the assignment,
transfer or other disposition of the shares of Common Stock, unless such shares have been
registered or qualified under the Act and applicable blue sky laws or there has been
delivered to the Company an opinion of counsel, satisfactory to the Company, to the
effect that such registration and qualification is not required.  







         2.       
          Adjustment in Shares of Common Stock and Exercise Price. The number of
          shares of Common Stock purchasable upon the exercise of this Bridge Warrant and
          the Exercise Price per share are subject to adjustment from time to time as
          provided in this Section 2; provided, however, that the Exercise
          Price per share will not be less than $.01 per share. 



		    2.1        Subdivision
or Combination of Shares. If the Company at any time subdivides its outstanding
shares of Common Stock into a greater number of shares (including a stock split effected
as a stock dividend) or combines its outstanding shares of Common Stock into a lesser
number of shares, the number of shares issuable upon exercise of this Bridge Warrant will
be adjusted to such number as is obtained by multiplying the number of shares issuable
upon exercise of this Bridge Warrant immediately prior to such subdivision or combination
by a fraction, the numerator of which is the aggregate number of shares of Common Stock
outstanding immediately after giving effect to such subdivision or combination and the
denominator of which is the aggregate number of shares of Common Stock outstanding
immediately prior to such subdivision or combination, and the Exercise Price will be
correspondingly adjusted to such amount as will, when multiplied by the number of shares
issuable upon full exercise of this Bridge Warrant (as increased or decreased to reflect
each subdivision or combination of outstanding shares of Common Stock, as the case may
be), equal the product of the Exercise Price in effect immediately prior to such
subdivision or combination multiplied by the number of shares issuable upon exercise of
this Bridge Warrant immediately prior to such subdivision or combination.  







		    2.2               Effect
of Sale, Merger or Consolidation. If any capital reorganization or reclassification
of the capital stock of the Company, or consolidation or merger of the Company with
another corporation, or sale of all or substantially all of the Company’s assets to
another corporation, is effected after the date hereof in such a way that holders of
Common Stock will be entitled to receive stock, securities or assets with respect to or
in exchange for Common Stock, then, as a condition of such reorganization,
reclassification, consolidation, merger or sale, lawful and adequate provision will be
made whereby the Holder will thereafter have the right to purchase and receive, upon the
basis and the terms and conditions specified in this Bridge Warrant and in lieu of the
shares immediately theretofore purchasable and receivable upon the exercise of this
Bridge Warrant, such shares of stock, securities or assets as may be issued or payable
with respect to or in exchange for a number of outstanding shares of Common Stock equal
to the number of shares of Common Stock immediately theretofore purchasable and
receivable upon the exercise of this Bridge Warrant, and in any such case appropriate
provision will be made with respect to the rights and interests of the Holder to the end
that the provisions of this Bridge Warrant (including, without limitation, provisions for
adjustments of the Exercise Price and of the number of shares issuable upon the exercise
of this Bridge Warrant) will thereafter be applicable, as nearly as may be possible, in
relation to any shares of stock, securities or assets thereafter deliverable upon the
exercise of this Bridge Warrant. The Company will not effect any such consolidation,
merger or sale unless prior to or simultaneously with the consummation thereof the
successor corporation (if other than the Company) resulting from such consolidation or
merger or the corporation purchasing such assets assumes, by written instrument executed
and delivered to the Holder at its last address appearing on the books of the Company,
the obligation to deliver to the Holder such shares of stock, securities or assets as, in
accordance with the foregoing sentence, the Holder may be entitled to purchase.  















		    2.3        Conversion
Right. The Holder shall have the right (the “Conversion Right”) to convert
this Warrant into shares of the Company’s Common Stock as provided in this Section
2.3 if, but only if, at any time after April 18, 2006 and prior to the Expiration Date,
there is no effective registration statement (including a current prospectus) registering the
issuance or resale of the Common Stock issued or issuable upon exercise of this
Bridge Warrant.  







		    (a)                             Upon
exercise of the Conversion Right with respect to a particular number of
               shares of Common Stock (the “Conversion Shares”), the Company
shall                deliver to the Holder, without payment by the Holder of any Exercise
Price or                any cash or other consideration, that number of shares equal to
the quotient                obtained by dividing the Net Value (as hereinafter defined)
of the Conversion                Shares by the Current Market Price (as hereinafter
defined) of a single Share,                determined in each case as of the close of
business on the Conversion Date (as                hereinafter defined). The “Net
Value” of the Conversion Shares shall                be determined by subtracting
the Exercise Price of one share from the Current                Market Price of one share
and multiplying the remainder by the number of Bridge                Warrants being
converted. No fractional shares shall be issuable upon exercise                of the
Conversion Right, and if the number of shares to be issued in accordance
               with the foregoing formula is other than a whole number, the Company shall
pay                to the Holder the net amount in cash equal to the Current Market Price
of the                resulting fractional share.  







		    (b)                             The
Conversion Right may be exercised by the Holder by the surrender of the
               Bridge Warrant at the principal office of the Company or at the office of
the                Company’s transfer agent, if any, together with a written
statement                specifying that the Holder thereby intends to exercise the
Conversion Right and                indicating the number of shares of Common Stock
subject to the Bridge Warrant                which are being surrendered (referred to
above as the Conversion Shares) in                exercise of the Conversion Right. Such
conversion shall be effective upon                receipt by the Company of a facsimile
copy of the Exercise Agreement (provided                that the original of such
Exercise Agreement, together with the original of the                Bridge Warrant is
received by the Company within three (3) business days                following the date
on which the facsimile copy is received), or on such later                date as is
specified in the Exercise Agreement (the “Conversion                Date”), but
not later than the Expiration Date. Certificates for the shares                issuable
upon exercise of the Conversion Right, together with a check in payment                of
any fractional amount and, in the case of a partial exercise a new Bridge
               Warrant evidencing the Common Stock remaining subject to the Bridge
Warrant,                shall be issued as of the Conversion Date and shall be delivered
to the Holder                within seven days following the Conversion Date.  















		    (c)                        The
“Current Market Price” shall be determined as follows:  







		    (i)        If
the Common Stock is listed on a national securities exchange or admitted to
          unlisted trading privileges on such an exchange or quoted on either the
National           Market System or the Small Cap Market of the automated quotation
service           operated by The Nasdaq Stock Market, Inc. (“Nasdaq”), the
current           value shall be the 4:00 p.m. New York Time closing reported sale
price of           that security on such exchange or system as reported on the Bloomberg
system for           the ten trading days ending on the trading day immediately preceding
the day for           which the current market price is to be determined or, if no such
sales are made           on such days, the average of the highest closing bid and lowest
asked price for           such days on such exchange or system; or  







		    (ii)                          If
the Common Stock is not so listed or quoted or admitted to unlisted trading
          privileges, the Current Market Value shall be the average of the last reported
          4:00 PM New York Time closing bid price for such ten trading days quoted on the
          Nasdaq Electronic Bulletin Board (or any successor thereto), or, if not so
          quoted, then by the National Quotation Bureau, Inc. for such ten trading days;
          or  







		    (iii)                           If
the Common Stock is not so listed or quoted or admitted to unlisted trading
          privileges and bid and asked prices are not reported, the Current Market Price
          shall be determined in such reasonable manner as may be prescribed in good
faith           from time to time by the Board of Directors of the Company.  







		    2.4        
Bridge
Warrants Not Callable.   The Bridge Warrants are not callable.  







		    2.5        Notice
to Holder of Adjustment.   Whenever the number of shares purchasable upon
exercise of this Bridge Warrant or the Exercise Price is adjusted as herein provided, the
Company will cause to be mailed to the Holder notice setting forth the adjusted number of
shares purchasable upon the exercise of the Bridge Warrant and the adjusted Exercise
Price and showing in reasonable detail the computation of the adjustment and the facts
upon which such adjustment is based.  








5 












         3.       
          Prior Notice as to Certain Events. In the event the Company pays any
          dividend payable in cash or stock upon its Common Stock or makes any
          distribution to the holders of its Common Stock, then the Company will give
          prior written notice, by first class mail, postage prepaid, addressed to the
          Holder at the address of such holder as shown on the books of Company, of the
          date on which (i) the books of Company will close or a record taken for such
          dividend or distribution. Such notice will also specify the date as of which the
          holders of the Common Stock of record will participate in said dividend or
          distribution. Such written notice will be given not less than 20 days prior to
          the record date in respect thereto. Notwithstanding the rights established in
          Section 3, the Bridge Warrants are subject to restrictions on exercise as set
          forth in Section 1.3. 



         4.       
          Reservation of Common Stock. Not later than the date hereof, the Company
          will have authorized Common Stock in an amount sufficient to permit the exercise
          in full of this Bridge Warrant. At all times from and after such date, the
          Company will reserve and keep available for issuance upon the exercise of Bridge
          Warrants such number of its authorized but unissued shares of Common Stock as
          will be sufficient to permit such exercise. Upon issuance, in accordance with
          the terms of this Bridge Warrant, such shares of Common Stock will be validly
          issued, fully paid and nonassessable. 



         5.       
          No Voting Rights; Limitations of Liability. This Bridge Warrant does not
          confer upon the holder hereof any voting rights or other rights as a stockholder
          of the Company, either at law or equity. The rights of the Holder are limited to
          those expressed herein and the Holder by acceptance hereof, consents to and
          agrees to be bound by and to comply with all the provisions of this Bridge
          Warrant. No provision of this Bridge Warrant, in the absence of affirmative
          action by the Holder to purchase Common Stock, and no enumeration in this Bridge
          Warrant of the rights or privileges of the Holder, will give rise to any
          liability of such Holder for the Exercise Price of Common Stock purchasable by
          exercise hereof or as a stockholder of Company. 



         6.       
          Restrictions on Transfer of Bridge Warrant. 



		       (a)                    This
Bridge Warrant and the Holder’s rights hereunder may not be
               transferred, assigned or subjected to a pledge or security interest
without the                prior written consent of the Company and unless transferred by
surrender of this                Bridge Warrant with a properly executed Assignment (in
the form of Exhibit                B hereto) at the principal office of the
Company. If the Company determines                that the proposed assignment is
permitted pursuant to the provisions hereof and                the requirements of
applicable securities law, the Company will register the                assignment of
this Bridge Warrant in accordance with the information contained                in the
Assignment and will, without charge, execute and deliver a new Bridge
               Warrant or Bridge Warrants in the name of the assignee or assignees named
in                such assignment instrument and this Bridge Warrant will promptly be
cancelled.                Conditions to the transfer of this Bridge Warrant or any
portion thereof will be                that (i) the Holder must deliver to the Company an
opinion of counsel,                reasonably satisfactory in form and substance to the
Company’s counsel, to                the effect that the proposed transfer will not
be in violation of the Act or of                any applicable state law and that (ii)
the proposed transferee deliver to the                Company his, her or its written
agreement to accept and be bound by all of the                terms and conditions of
this Bridge Warrant, including compliance with Section                1.6 of this Bridge
Warrant. The date the Company initially issues this Bridge                Warrant will be
deemed to be the “Date of Issuance” of this Bridge                Warrant
regardless of the number of times new certificates representing the
               unexpired and unexercised rights formerly represented by this Bridge
Warrant are                issued.  








6 










		       (b)                      The
Holder acknowledges that this Bridge Warrant has not been registered under
               the Act, and, except in the limited instance described in Section 6(a)
above,                agrees not to sell, pledge, distribute, offer for sale, transfer or
otherwise                dispose of this Bridge Warrant or any Common Stock issued upon
its exercise in                the absence of (i) an effective registration
statement as to this Bridge                Warrant or such Common Stock under the Act, or
(ii) an opinion of counsel for                Company to the effect that such
registration is not, under the circumstances,                required.  







         7.       
          Registration Rights. The Company will include the resale of the shares
          underlying the Bridge Warrants (the “Bridge Warrants Shares”) in a
          registration statement subject to a six-month lock-up from the closing of the
          Company’s initial public offering which closed on July 21, 2005 on the sale
          of such shares by the Holder. In the event that during the period starting on
          January 21, 2006 and ending on April 18, 2007 the Bridge Warrants Shares
          (including shares that could be received pursuant to a cashless exercise of the
          Bridge Warrants) may not be sold pursuant to: (a) an effective registration
          statement with a current prospectus available, or (b) Rule 144 under the
          Securities Act of 1933, the Holder shall be paid a cash fee of 2% of the
          original principal amount of Bridge Note used to calculate the number of shares
          of Common Stock issuable upon exercise of this Bridge Warrant for each period of
          up to ten days that such sales may not be effected. 



         8.       
          Miscellaneous. 



		    8.1        Waiver.
No delay or failure of the Holder in exercising any right, power, privilege or remedy
under this Bridge Warrant will affect such right, power, privilege or remedy or be deemed
to be a waiver of the same or any part thereof, nor will any single or partial exercise
thereof or any failure to exercise the same in any instance preclude any further or
future exercise thereof, or the exercise of any other right, power, privilege or remedy.  







		    8.2        Notices.
All notices, requests and consents hereunder must be in writing. Notices, requests and
consents to the Company will be effectively given and delivered when (a) sent by
facsimile to the Company at (970) 461-0717 or (b) mailed by first class mail, postage
prepaid, to the Company at its offices at 489 N. Denver Avenue, Loveland, CO 80537.
Notices, requests, and consents to the Holder will be effectively given and delivered
when sent by facsimile or mailed by first class mail, postage prepaid, or sent by
overnight courier, to the Holder at the facsimile number or address of the Holder
appearing on the books and records of the Company. Either party by notice to the other
may from time to time change the facsimile number or address for any such notice,
request, or consent.  







		    8.3        Governing
Law; Venue. This Bridge Warrant and all rights and obligations hereunder, including
matters of construction, validity, and performance, will be governed by and construed and
interpreted in accordance with the laws of the State of Colorado, without regard to the
choice or conflicts of laws rules of such state. The parties agree that venue for any
suit, action, proceeding or litigation arising out of or in relation to this Agreement
will be in any federal or state court in the State of Colorado having subject matter
jurisdiction.  







7 










		    8.4        Successors.
This Bridge Warrant will inure to the benefit of and be binding upon the parties hereto
and their respective successors and assigns; provided, however, that this
Bridge Warrant may not be assigned without the prior written consent of the Company as
set forth in Section 6.  







		    8.5        Headings
and Exhibits. The headings used in this Bridge Warrant are for convenience only and
will not constitute a part of this Bridge Warrant. All of the exhibits attached hereto
are incorporated herein and made a part of this Bridge Warrant by reference thereto.  







        IN
WITNESS WHEREOF, this Bridge Warrant has been executed and delivered by a duly authorized
representative of the Company to be effective as of July 18, 2005. 










		A4S Security, Inc. 
	 	
	 	
		By:______________________________



















8 












EXHIBIT A  



Exercise Agreement  







		
	To: A4S Security, Inc. 	Dated:  ___________________








        The
undersigned, pursuant to the provisions set forth in the within Bridge Warrant, hereby
agrees to subscribe for and purchase _____________________________________ shares of the
Common Stock covered by such Bridge Warrant and makes payment herewith in full for such
Common Stock at the price per share provided by such Bridge Warrant.  




        The
undersigned requests that a certificate for the shares of Common Stock be issued as
follows:  










			
		Name: 	___________________________________________
		Address: 	___________________________________________

___________________________________________
___________________________________________
			
			











and, if said number of shares is not
all the shares of Common Stock purchasable hereunder, that a new Bridge Warrant for the
balance of the remaining shares of Common Stock purchasable under the within Bridge
Warrant be registered in the name of, and delivered to, the undersigned at the address
stated below: 






			
		Name: 	___________________________________________
		Address: 	___________________________________________

___________________________________________
___________________________________________
			
			










			
	Dated:  ______________________	 	 
			HOLDER: 
	 		
			Signature:  ___________________________________________

			










		
		
		
















EXHIBIT B  



Assignment  



        To
be executed by the registered Holder to request a permitted transfer of the attached
Bridge Warrant. 




FOR VALUE RECEIVED 



________________________________________ ("Assignor")  



hereby sells, assigns and transfers
unto 



________________________________________("Assignee")
(Name)  




________________________________________
(Address)


________________________________________ 






the right to purchase shares of
Common Stock of A4S SECURITY, INC. evidenced by the attached Bridge Warrant, together with
all right, title and interest therein, and does irrevocably constitute and appoint
_________________________ attorney to transfer the said right on the books of said
corporation with full power of substitution in the premises. 





















		
		
	Date:_______________	Assignor ____________________________



By __________________________________

Its __________________________________

Signature: ____________________________


   









		
		
	
APPROVED:



Date: _______________    	

A4S SECURITY, INC. 




By _________________________________



Its _________________________________



Signature ____________________________