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Criminal Court, City of New York,

The PEOPLE of the State of New York, Plaintiff, v. Christopher S. CIALINO, Defendant.

Decided: February 06, 2007

Raymond L. Rodriguez, Staten Island, for defendant. Daniel M. Donovan, Jr., District Attorney (Joseb S. Gim of counsel), for plaintiff.

In an apparent case of first impression in this State, this court holds that the source codes for the Intoxilyzer 5000 are not discoverable.

The defendant is charged with Operating a Motor Vehicle While Under the Influence of Alcohol (VTL § 1192 subds. 2 and 3).   In addition to items contemplated by CPL § 240.20[1], he moves for an order directing the People to produce the source code 1 of the Intoxilyzer 5000 used in this case, “reports concerning the operation and maintenance of the machine, simulator solution analysis, certificate of calibration, device manuals, maintenance manuals and schematics, changes made to the device and tollbooth video.”


The People concede that some of the items sought by the defendant are discoverable.   Although the defendant concedes that the Intoxilyzer 5000 is an approved device for measuring blood alcohol content, he contends that there “is no way of telling just what software version must be loaded to meet the criteria for approval.”   The People argue:  (a) the source code is not discoverable;  (b) the issue of reliability of the Intoxilyzer 5000 has been foreclosed by the legislature and courts;  (c) the source code does not affect the reliability of the Intoxilyzer 5000;  and (d) the People do not have actual or constructive possession of the source code.


According to “Defense of Drunk Driving Cases, Criminal, Civil” at section 21.06:

The Intoxilyzer 5000 has undergone a number of changes since its introduction in 1983.   Accordingly, the so-called “Intoxilyzer 5000” is not a single instrument, but a series of instruments, all called the Intoxilyzer 5000, but with significant differences.   Changes have been made to increase stability, increase specificity (reduce potential of effects due to interfering substances), increase accuracy (especially at low breath-alcohol concentrations (BrACs)), and increase data handling capability and remote access.

(2007, Matthew Bender & Company)

It is an undisputed fact that the People do not actually or constructively possess the source code.   The defendant's reliance on State v. Muldowny, 871 So.2d 911 [Fla. 5th DCA 2004] is inapposite.   In Muldowny, the Florida court imposed sanctions against the prosecutor for not producing the operator's manual, maintenance manual, and schematic for the Intoxilyzer 5000.   However, in Moe v. State, 944 So.2d 1096 [Fla. 5th DCA], [REHEARING DENIED JANUAry 8, 2007], the same court thAt decided Muldowny, held that the defendant was not entitled to the Intoxilyzer 5000 source code because the state did not possess it, and because it was the property of a corporation that invoked statutory and common law privileges protecting the code from disclosure, thereby making it unobtainable.   The court in Moe pointed out that those facts were not contemplated in Muldowny.

This court has found no case law holding that a defendant is entitled to the Intoxilyzer 5000 source code.   Other courts have however, found that it is not discoverable.2

This court holds that the public policy of this State recognizes that the Intoxilyzer 5000 is a reliable machine, included in the Department of Health schedule, satisfying its criteria for reliability (10 NYCRR § 59.4;  see People v. Summa, 140 Misc.2d 763, 531 N.Y.S.2d 993 [Suffolk Dist. Ct. 1988];  People v. Gallagher, 132 Misc.2d 195, 503 N.Y.S.2d 500 [Suffolk Dist. Ct. 1986] ).   Absent evidence to the contrary, such instruments are sufficiently reliable to permit the admissibility of test results without expert testimony (People v. Hampe, 181 A.D.2d 238, 241, 585 N.Y.S.2d 861 [3rd Dept. 1992] ).   It is incumbent on the defendant to show that a software change has altered the reliability of the machine.   Furthermore, this court will not assist the defendant in his proposed fishing expedition for trade secrets held by a third party.   The defendant has not provided the court with a reasonable basis to believe that any software changes and upgrades have caused the Intoxilyzer 5000 used in this case to be unreliable.

After reviewing counsel's submissions, it is hereby:

ORDERED, that defendant's motion for an order directing the People to produce the source code of the Intoxilyzer 5000 used in this case, device manuals, maintenance manuals and schematics, and software changes made to the device, is denied;  and it is further,

ORDERED, that to the extent provided by CPL article 240, the People shall comply with the defendant's other discovery requests.

This opinion shall constitute the Decision and Order of the court.


1.   The source codes are the computer instructions followed by a computing device in processing information.

2.   State v. Burnell, 2007 WL 241230 (Conn.Super.   2007 [Scheinblum, J.] ) and State v. Walters, 2006 WL 785393 (Conn.Super.   2006 [Marano, J.] ) hold that a prosecutor is not required to obtain and produce Intoxilyzer 5000 source codes.


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