JOINT FILING AGREEMENT
Exhibit 1
In accordance with Rule 13d-1(k)(1) promulgated under the Securities Exchange Act of 1934, the
undersigned agree to the joint filing of Amendment No. 10 to the Statement on Schedule 13D
(including any and all subsequent amendments thereto) with respect to the shares of common stock,
$0.005 par value, of Digital Angel Corporation, a Delaware corporation (formerly Medical Advisory
Systems, Inc., a Delaware corporation) and further agree to the filing of this agreement as an
exhibit thereto. In addition, as signified by their signatures thereto, each party to this
agreement expressly authorizes the other party to this agreement to file on its behalf any and all
amendments to such Statement on Schedule 13D.
Date: August 14, 2007
| APPLIED DIGITAL SOLUTIONS, INC. |
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| By: | /s/ Xxxxxxxx X. Xxxxxx | |||
| Name: | Xxxxxxxx X. Xxxxxx | |||
| Title: | Acting Chief Financial Officer | |||
| DIGITAL ANGEL SHARE TRUST By: Wilmington Trust Company, trustee |
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| By: | /s/ Xxxxxxxx X. Xxxxxx | |||
| Name: | Xxxxxxxx X. Xxxxxx | |||
| Title: | Attorney-in-Fact and Authorized Agent | |||
