Setting up and using a signature pad

One option for documenting a patient signature within the Concentric clinician application is to use a signature pad, a specialist device used only for the recording of electronic signatures. This is an alternative to signing on a standard touchscreen device (i.e. a mobile or tablet).

The signature pads are connected to a computer, often in outpatient departments and on mobile workstations on the wards (AKA WOWs), and come with an attached stylus, for signing.

Compatible signature pads

Different brands and models of signature pad have different approaches to how they interact with a web application. Only the formally supported model – the Wacom STU-430 – will work with Concentric.

Setting up a Wacom STU-430

The setup of a signature pad has 2 elements, initial pairing with the browser, then activation within each browser session – these are detailed below. There are no drivers to install.

Initial pairing with the browser

Pairing of the signature pad and the browser should only need to be done once for each device, browser, and signature pad combination. So for example:

  • if a user pairs a signature pad with a desktop in outpatients, within the Google Chrome browser, then a different user returns a few days later and uses the same computer and signature pad, again within Chrome, then the signature pad will already be paired.
  • if both Google Chrome and Edge are being used on the computer that the signature pad is connected to, then the initial pairing process would need to happen within each browser.

Plug the signature pad into the computer using the USB connection then go to the configure signature pad page from the top right account menu in Concentric.

Signature pad setup – account menu

The configue signature pad page shows whether a signature pad is currently paired and connected, and what to do to pair.

Signature pad setup – initial view

Clicking ‘Pair a signature pad’ will bring up a popup. The device – STU-430 – will be listed and should be connected to.

Signature pad setup – HID pairing

The device should now be listed within Concentric:

Signature pad setup – HID paired

The info banner in the screenshot states that the signature pad will need to be activated in consult view, that is the second part of setup and is discussed below.

Activation within browser session

The second stage of ‘setup’ is one that is quick to do, but needs to be repeated more often – activating the signature pad within the browser session.

Within consult view, on reaching the signing page, if a signature pad is paired and plugged in then a 3rd tab is presented - ‘Sign using a signature pad’ – Concentric defaults to this option for signing if available:

Signature pad setup – consult view activation

‘Activate signature pad’ needs to be clicked, again bringing up a popup, which should show the option ‘STU-430 – Paired’. Once selected the view in Concentric changes to show that the signature pad is ready to use:

Signature pad setup – activated

The signature pad will now show the patient name, signing area, and two buttons, ‘Clear’ and ‘I consent’. On clicking ‘I consent’ Concentric will automatically advance to the next page.

The activation step described in this section is a built-in security feature of modern browsers, to ensure that connected peripherals are trusted to interact with the web browser. In practice it means that users usually need to activate once per session of using Concentric (e.g. once per clinic), but in some cases it can be more frequently, for example once per patient if launching in the patient context from an EHR.


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Further reading


Our guide regarding device compatibility and how to consider whether additional devices are required for a Concentric deployment.