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PostMark® interfaces point of sale terminals (POS) with security cameras to produce a continuous overlay of transactions superimposed on the camera video output.  PostMark® can either interface between a point of sale terminal and pole display or work standalone connected to a point of sale terminal.  The PostMark® is the ideal product for your cash register security and surveillance needs. 

Intuitive Circuit's PostMark® uses video text inserter technology that allows it to easily integrate into an existing cash register surveillance system.  A cash register surveillance or a video based cash register security system integrated with the PostMark® POS text inserter product allows security personnel to review and find specific recordings of a cash register transaction. 

Our cash register surveillance product is compatible with many different types of cash registers, pole displays, and POS systems.  Intuitive Circuit is the original designer, producer, and seller of this POS security product.  We have over 10 years of engineering design experience in the video text inserter products business.  You can view our other video text inserter products from our products page.  If there is a cash register or POS system that you want supported please let us know.



  • Dimensions: 5 1/2" x 3 1/2" x 1 1/4"
  • Weight: 7.8 oz.
  • Input voltage: 8.0 to 14.0 volts DC (60 ma max.)
  • DC plug 2.1 mm x 5.5 mm, center tip positive
  • Operating temperature: -10 C to +70 C
  • Text area: 28 columns by 11 rows (308 characters)
  • Text / background: Adjustable brightness and translucent (see-through) levels
  • Video level: 1 volt peak to peak
  • Video impedance: Input 75 ohm, output 75 ohm resistively terminated
  • RS-232 serial or TTL input: 9,600 baud, 8 data bits, 1 stop bit, inverted data
    PostMark® Supports the following cash registers and Point of Sale (POS) Systems:
    Cash Registers
    • Micros (Eclipse, Workstation 4)
    • Ruby (Epson TM-U950 printer)
    • Samsung
    • Uniwell

    POS Systems

    • Aldelo for Restaurants 3.0
    • Cash Register Express 2000 (CRE2000)
    • ComCash
    • Digital Dining
    • Focus
    • MicroPos
    • PetroCan
    • Pinnacle Palm POS
    • VeriTouch
    • Point of Success
    • Pole Displays
    • EMAX
    • Epson
    • IEE
    • TAPS
    • Ultimate PD2000
    • Ultimate PD2000XL


    On the back of PostMark® there are five connectors (see figure 2.)  Make the following hookups:

    Connector Hookup
    VIDEO IN (optional)
  • Attach noise free NTSC (or optional PAL) video source
  • Not required if self-generated screen mode selected
  • Attach to monitor, VCR, DVR, video transmitter, etc.
  • Attach using supplied cable to RS-232 port of POS register / PC.
  • POLE DISPLAY (optional)
  • Attach to RS-232 input of pole display.
  • Not required
  • DC 8-14 V
  • +8 to +14 volts DC (60 ma max.)
  • 2.1 mm x 5.5 mm DC coax plug, center tip positive
  • Wall power supply included
    The PostMark® serial port must be configured to match the electrical configuration (pin out) of the point of sale terminal and optional pole display.  This is done once per unit by setting jumpers on the circuit board.  To open the enclosure remove the two back screws, remove the panel and bezel, and slide the circuit board out.  Just below the DB-9 serial connectors are a column of 14 jumpers. For any installation, at minimum, the RX and GND jumpers must be installed.

    Jumper Description Table:

    Jumper(s) Description
    P5, P9, P4, P8, P3, P7, P2, P6, P1 These jumpers tie the REGISTER / PC connector pins to the POLE DISPLAY connector pins to allow the POS system RS-232 signals to pass-through to the pole display.
    TX, RX, GND These  jumpers tie REGISTER / PC pins to the PostMark® circuit.  TX is never used.
    CTS This jumper ties the REGISTER / PC RTS and CTS pins together.  This may be required for some REGISTERS / PC's.
    DCE This jumper ties the REGISTER / PC DCE and DTE pins together.  This may be required for some REGISTERS / PC's.

    Common Jumper Configurations:

    POS System / Pole Display PostMark® Jumper Settings
    Default POS system and no pole display RX and GND
    Default POS system and pole display P5, P3, RX and GND
    VersiTouch point of sale software Epson DM-D110 pole display(Configure VersiTouch, Epson DM-D110, and  PostMark® for EMAX emulation) P5, P3, RX, CTS, DCE, and GND



    PostMark® configuration is performed through an on-screen menu system.  At any time press the "MENU" button to enter the on-screen menu configuration.  The "UP, DOWN, and ENTER" buttons move the cursor and change the values (see figure 1.). The on-screen configuration allows PostMark®  to be tailored for the specific customer application.  The on-screen text can be repositioned and the number of rows can be adjusted.  The text can be made translucent (see-through) and have a background frame.  The  POS system and pole display RS-232 serial data format can be configured.

    Main Menu:

    Menu Option Action
    Set Screen Parameters Displays Screen Parameters Menu
    Set Pole Display Parameters Displays Pole Display Parameters Menu
    Save Changes and Exit Save all the options that have been changed in non-volatile memory
    Discard Changes and Exit Discard all the option changes that have been  made since entering the menus

    Screen Parameters Menu:

    Menu Option Action
    Screen Mode
  • SELF-GEN - PostMark® generates its own blue background screen. No camera required.
  • OVERLAY - Overlay the on-screen text on the incoming camera video source
  • OFF - Pass the camera video through without overlaying the on-screen text
  • Background Frame
  • OFF - Do nothing
  • ON - Display a black frame behind the on-screen text
  • Translucent Text
  • OFF - Do nothing
  • ON - Allows the on-screen text to be see-through (less intrusive)
  • Manual Adjustment
  • OFF - Do nothing
  • ON - Allows the on-screen text and background brightness to be adjusted via internal potentiometers
  • Total Rows The number of on-screen text rows that are displayed (1 - 11)
    Horz Position
  • LEFT - Left justify the on-screen text
  • CENTER - Center justify the on-screen text
  • RIGHT - Right justify the on-screen text
  • Vert Position
  • TOP - Top justify the on-screen text
  • CENTER - Center justify the on-screen text
  • BOTTOM - Bottom justify the on-screen text
  • Exit to Main Menu Exit to Main Menu

    Pole Display Parameters Menu:

    Menu Option Action
    Pole Display Rows Number of pole display rows (1 - 4)
    Pole Display Columns Number of pole display columns (20)
    Select Emulation Type Displays the Select Emulation Type Menu. The selection from that menu will change the Start and End values.
    Start Select the start byte sequence the POS system will generate (values in decimal)
    End Select the end byte sequence the POS system will generate (values in decimal)
    Exit to Main Menu Exit to Main Menu

    Select Emulation Type Menu:

    Menu Option Action
    EMAX EMAX pole display emulation
    IEE IEE pole display emulation
    TAPS TAPS pole display emulation
    Ultimate PD2000 Ultimate PD2000 pole display emulation
    Ultimate PD2000XL Ultimate PD2000XL pole display emulation
    None Do not change Start and End byte sequences


    Warranty & Service:

    If the product fails to perform as described in our product description or specification, within 90 days from the date of shipment to the buyer, we will repair or replace the product and/or accessories originally supplied. Failure due to improper installation, misuse, abuse or accident is not covered by this warranty. Incidental and consequential damages are not covered by this warranty. The buyer must obtain a Return Material Authorization by calling (248) 248) 588-4400, and shipping the defective product to Intuitive Circuits, 3928 Wardlow Ct., Troy, MI 48083, freight prepaid. After the warranty expires, we will promptly supply an estimate for the repair cost.