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     I get calls regularly asking about surveillance signs.  Typically the questions are:
- are signs required when installing video
- if installing video in questionable places will signs aid in allowing the cameras
- how long is video data required to be maintained
- who is entitled to the video data
    Generally my response is that there are no laws that I am aware of that require the posting of signs that cameras are in place or video recordings are being made.  Posting signs will not relieve you of liability for installing cameras or video surveillance in situations where it is prohibited by law or common morality.  Since there is an absense of statutory regulation for video data there are no laws that dictate how long data should be stored.  As for who gets to view the video, law enforcement can in the course of investigation.  Misuse of video data could create liability.
     That's the short answer.  However, I decided to do a little research and found a law in New York City that applies to cabarets, public dance halls and catering facilities [but not restaurants].  The law requires video surveillance at the entrance and exit doorways that covers 15 feet on each side of the door.  Cameras must be able to record at night, minimum 15 frames per second, viewable on a computer, have no audio capability, must be working and record continuously during business operations and for 2 hours thereafter, data indexed by date, maintained for 30 days, maintained in a confidential, locked and restricted manner, all personnel with access certifying in writing that they understand the restrictive use of the data, must post signage at appropriate locations, as determined by rule of the commissioner, to notify the public of its use of video surveillance equipment and the locations of video surveillance equipment so that the public has sufficient warning that surveillance is in operation, make data available to law enforcement, and file a written report with the city commissioner certifying compliance with the law.  Failure to comply is severe.  If you misuse the data by dissemination of recordings [see a violation of the penal law or section 50 of the civil rights law] it could result in suspension or revocation of a license and a fine of not less than $5,000 nor more than $50,000.
     Video equipment and services should be installed pursuant to the Commercial All in One.  Don't be surprised to see more laws that focus on video surveillance and video data.  The New York City law is below.
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 NEW YORK CITY ADMINISTRATIVE CODE
 TITLE 20: CONSUMER AFFAIRS
 CHAPTER 2: LICENSES
 SUBCHAPTER 20: PUBLIC DANCE HALLS, CABARETS AND CATERING
 ESTABLISHMENTS 
 § 20-360.2. Additional security measures for cabarets and public dance
 halls. a. No one shall operate a cabaret or public dance hall unless all
 entrances and exits used by patrons are equipped with digital video
 surveillance cameras, provided, however, that this section shall not
 apply to an establishment that operates primarily as a restaurant, as
 defined by section three of the alcoholic beverage control law, during
 all hours of operation.
  b. Digital video surveillance systems shall comply with the following
 provisions and with the rules of the commissioner:
  1. The video surveillance cameras shall be digital in nature and shall
 be of sufficient number, type, placement and location to view and record
 all activity in front of and within 15 feet of either side of each
 entrance or exit;
  2. The video surveillance cameras shall be sufficiently light
 sensitive and provide sufficient image resolution (supported by
 additional lighting if necessary) to produce easily discernible images
 recorded at all times;
  3. The video surveillance cameras shall record at a minimum speed of
 fifteen frames per second;
  4. The video surveillance camera images shall be capable of being
 viewed through use of appropriate technology, including but not limited
 to a computer screen or closed circuit television monitor;
  5. The video surveillance camera system shall be capable of
 transferring the recorded images to a portable form of media, including
 but not limited to compact disc or digital video disc;
  6. The video surveillance cameras shall not have an audio capability;
  7. The video surveillance cameras shall be maintained in good working
 condition;
  8. Except as otherwise provided by rule, the video surveillance
 cameras shall be in operation and recording continuously during all
 hours of operation of the cabaret or public dance hall and for two hours
 after the cabaret or public dance hall closes; 
  
 9. The recordings made by video surveillance cameras installed and
 maintained pursuant to this section shall be indexed by dates and times
 and preserved for a minimum of thirty days so that they may be made
 available to the department, the police department and other government
 agencies acting in furtherance of a criminal investigation or a civil or
 administrative law enforcement purpose;
  10. All recordings made by video surveillance cameras installed and
 maintained pursuant to this section while in the possession of the
 cabaret or public dance hall shall be stored in a locked receptacle
 located in a controlled access area, to which only authorized personnel
 have access, or shall otherwise be secured so that only authorized
 personnel may access such video recordings. All personnel authorized to
 access such video recordings must certify in writing that they have been
 informed on the appropriate use and retention of recordings as set forth
 in this section, and on the legal issues associated with video
 surveillance and the use and retention of recordings. The cabaret or
 public dance hall shall keep a log of all instances of requests for,
 access to, dissemination and use of, recorded materials made by video
 surveillance cameras installed and maintained pursuant to this section.
 Copies of the certifications by authorized employees and of the access
 log shall be provided to the department in accordance with its rules;
  11. The use or dissemination of recordings made by video surveillance
 cameras installed and maintained pursuant to this section in violation
 of the penal law or section 50 of the civil rights law shall result in
 suspension or revocation of a license and a fine of not less than $5,000
 nor more than $50,000; and
  12. The cabaret or public dance hall shall post signage at appropriate
 locations, as determined by rule of the commissioner, to notify the
 public of its use of video surveillance equipment and the locations of
 video surveillance equipment so that the public has sufficient warning
 that surveillance is in operation.
  c. Each person subject to the provisions of this section shall submit,
 or ensure the submission of, a report to the department within thirty
 days after the effective date of this section, or, in the case of a new
 cabaret or public dance hall, within thirty days after the establishment
 of such cabaret or public dance hall. Such report shall certify that the
 cabaret or public dance hall is in compliance with this section. Reports
 filed pursuant to this subdivision shall be submitted in such form and
 manner and containing such information as shall be provided by rule of
 the commissioner.
  d. The department shall conduct periodic inspections of licensees to
 ensure compliance with the use and retention policies set forth in this
 section.
  e. The commissioner may suspend or revoke a cabaret or public dance
 hall license if the licensee violates the requirements of this section
 and, in addition, shall impose a fine of $1,000 for each violation of 
 paragraphs nine, ten or twelve of subdivision (b) of this section, and
 any additional penalties and fines as required by paragraph eleven of
 subdivision (b) of this section.
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