EXHIBIT 5.1



                         [LETTERHEAD OF BRYAN CAVE LLP]



May 8, 2002


EMB Corporation
5075 Warner Avenue
Suite B
Huntington Beach, CA 92649

Re: Registration on Form S-8

Gentlemen:

At your request, we have examined the Registration Statement on Form S-8 (the
"Registration Statement") as proposed to be filed by you with the Securities and
Exchange Commission in connection with the registration under the Securities Act
of 1933, as amended, of the offer and sale of up to 7,000,000 shares (the
"Shares") of Common Stock, no par value per share, of EMB Corporation, a Hawaii
corporation (the "Company"), to be issued pursuant to the Company's 1999 Stock
Plan, as Amended. We have further examined the proceedings that you have
previously taken and are familiar with the additional proceedings proposed to be
taken in connection with the authorization, issuance, and sale of the Shares.
Subject to compliance with applicable state securities and "Blue Sky" laws, we
are of the opinion that the Shares, upon their issuance and sale in the manner
described in the Registration Statement, will be legally issued, fully paid, and
non-assessable securities of the Company. We consent to the use of this opinion
as Exhibit 5.1 of the Registration.

Very truly yours,

/s/ Bryan Cave LLP
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Bryan Cave LLP