We looked into the accessibility of existing Privacy Enhancing Tool, to use them later in our user behaviour study. We focused on tracking blocker tools that block beacons, trackers, cookies, etc. and thus prevent behavioural analysis and behavioural targeting.
Our analysis showed that Ghostery is the most accessible tool. Thus Ghostery will be used for demonstration in the requirements analysis and user behaviour study.
The following table provides an overview of the analysed tools:
| Name | Accessibility | Open Source | Supported browser |
| Ghostery | The plugin can be accessed by keyboard. Alt+Strg+G opens the menu, which can be navigated with the keyboard also. It is interpreted and read correctly by the screenreader (NVDA). Only the old version of the menu is accessible, the new version is not completely accessible. | Nein | Firefox Chrome Opera Safari Internet Explorer |
| Privacy Badger | Not accessible by keyboard only. This was also confirmed by the developers on the mailing list. Nevertheless the Pirvacy Project stated interest in improving the accessibility. Blind Faith was invited to support the accessibility status of the Privacy badger tool with the results of the project. | Ja | Firefox Chrome |
| DisconnectMe | No information about keyboard accessibility found. An e-mail to support has so far remained unanswered. | Ja | Firefox Chrome Internet Explorer Safari Opera |
| Blur | No information about keyboard accessibility found. An e-mail to support has so far remained unanswered. | Nein | Firefox Chrome Opera Safari |
