Signature Pad STU-540
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Signature Pad STU-540



  • Secure Transactions: Transaction security with state-of-the-art TLS encryption
  • Native Support: Native support for Citrix v7.6.3 and newer in standard USB mode.
  • Virtual-ready: Virtual COM Port (VCP) mode for Citrix v6.5 and other virtualised desktop environments

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As our most advanced and robust premium signature pads, the Wacom STU-540 features a 5″ high-resolution colour screen with hardened cover glass for superb durability.

They also feature a broad range of connectivity options including multiple choices for virtualised desktop environments, as well as sophisticated encryption and user convenience.

As a result, these signature pads have the flexibility to meet the growing demands of any organisation implementing handwritten electronic signatures.

Key Features and Benefits

  • Attractive signature rendering through the use of WILL™ (Wacom Ink Layer Language) technology that renders the best and most authentic-looking representation of handwritten electronic signatures
  • Customisable key pad and PIN pad enabling input using graphic images or numerals
Signature Pad STU-540
  • Enhanced signature traceability through a UID (Unique hardware ID) for identifying the exact signature pad unit used for a particular signature and other inputs
  • Straightforward integration of signature pad support into applications through the WILL™ SDK (Software Development Kit) for Signature
  • Ability to display promotional material through an upgraded USB protocol and internal image storage that enables ads to be shown at natural speeds with no delays
  • Low maintenance costs thanks to high through the use of WILL™ (Wacom Ink Layer Language) technology that renders the best and most authentic-looking representation of handwritten electronic signatures
  • Biometrically accurate signatures using the digital pen with 1024 levels of pressure sensitivity
  • High durability and a natural, paper-like feel enabled by the hardened glass with anti-glare screen treatment
  • Secure transactions enabled by state-of-the-art AES256 / RSA2048 encryption
  • Support for virtualised environments through the Virtual COM Port (VCP) for compatibility with Citrix XenDesktop and XenApp v6.5 and later

General Specifications

  • Dimensions Dimensions (W x H x D) 6.41 x 6.18 x 0.39 inches / 163 x 157 x 10 mm
  • Weight Weight (including stand) 0.6 lbs / 275 g
  • Main body colorMain body color Black
  • Power supplyPower supply USB bus powered
  • Power consumptionPower consumption 2.5 W maximum
  • Communication interfaceCommunication interface USB/VCP/RS-232

Pad and Pen

  • Reading Technology Reading Technology Electromagenetic Resonance (EMR)
  • Active area size Active area size 4.25 x 2.56 inches / 108 x 65 mm
  • Coordinate resolution Coordinate resolution 2540 lpi / 0.01 mm/pt (non-interpolated)
  • Coordinate accuracy Coordinate accuracy ±0.02 inches / ±0.5 mm (center)
  • Report rate Report rate 200 points per second (non-interpolated)
  • Pressure levels Pressure levels 1024 (non-interpolated)
  • Encryption Encryption AES256 / RSA2048

LCD Display

  • Display Type Display Type Amorphous TFT LCD
  • Cover plate surface Cover plate surface AG etched glass
  • Native resolutionNative resolution 800 x 480 pixels


  • Pen storage Pen storage Pen compartment
  • Connectivity security Connectivity security USB cable locking system
  • Data security Data security Real time image capture without data storage. Internal memory for images only.
  • Security lock slot Security lock slot Yes, Kensington
  • Operating temperature, relative humidity Operating temperature, relative humidity +41° F to +104° F (+5° C to +40° C), (humidity 30 % to 80 % RH, no condensing)
  • Storage temperature, relative humidity Storage temperature, relative humidity -4° F to +140° F (-20° C to +60° C), (humidity 30% to 90% RH, no condensing)
  • Signature software compatability Signature software compatability Compatible with Windows signature / eSign software and Wacom´s sign pro PDF and sign pro PDF Plug-in for Adobe Acrobat. For Windows, C++, .Net and Java development libraries available for developers (contact us for library and software availability in other development languages and platforms)
  • Package content Package content Signature pad, cordless and battery-free pen, USB cable (9.84 ft / 3 m), quick start guide, pen tether (nylon fiber, 19.7 inch / 50 cm)
Signature Pad STU-540

Additional Information

Weight275 g
Dimensions10 × 163 × 157 mm


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