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ONCE Tactile Communicator

Tactile Communicator Logo
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What does it consist of:

July 2018


It is a communication aid program for deafblind people, with a hearing loss that does not allow them to understand spoken messages and a visual disability to different degrees, with their interlocutors, using their smartphone or tablet as a channel.

The deafblind person can deliver messages in person, addressed to their interlocutors in everyday situations, using the fingerprint system, and has access to their response in an accessible way according to their needs.


Warranty and support

Through the CIDAT website, several ways of contacting both for product consultation and support are exposed. here!, such as: Telephone service, email, postal mail and fax. Being such a specialized entity and with so many years of experience in serving groups with disabilities, its offer to access information and be able to communicate with the entity is very appropriate. 


Price range

Free Download


Forms of Acquisition:

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Technical verification:


  • Very simple communication system that allows you to communicate with hearing people who do not know Spanish Sign Language or fingerprint.
  • You can predefine regular messages, which is very useful, for example to save emergency or medical messages.
  • The tool is really accessible to the group for which it is addressed and the possibilities for the interlocutor to introduce written or oral information, amplifies the degree of accessibility of the tool.

Improvement points:

  • We think that it would be of interest to analyze the security aspects, since as the operation of the application is designed, the deafblind person has to literally hand over his / her terminal so that the interlocutor can write on it. Perhaps it could be considered to incorporate in the cases that it is required, the connectivity with the terminal of the hearing person, for example.


The application has been tested for two weeks. The installation process is very simple, it does not require prior authentication or registration. Once the CTO is installed, you can consult the Help tapping the screen once with four fingers, or Start using the CTO, pressing two fingers once.


Help screen


The objective of the CTO is to allow communication between deafblind people and their interlocutors, in a way that is accessible to visual characteristics and in person.

One of the recommendations in the first contact with the tool is to use the "Learning Mode", to train the skill of using the writing of messages on the screen.

The messages entered by deafblind people are performed, based on the remains of vision on the touch screen. People with impaired vision can enter messages on the screen either by "Gestures on the screen" or through the "On-screen keyboard". For these people, the screen can be configured with the most appropriate color scheme: Yellow on Black, White on Black, White on Blue, Black on White.

The messages are edited with the letter tracing or through the virtual keyboard and to alternate the communication between deafblind and interlocutor it will be done with a double tap with a finger.

Touch communicator writing screen


The interlocutor can enter the information through an alphanumeric keyboard or by voice, using the "Dictate" option.


Screen with keyboard for the interlocutor to use the communicator


Screen to respond to the deafblind person



Communicator caller screen


The interlocutor can enter the information through an alphanumeric keyboard or by voice, using the "Dictate" option.

Totally deafblind people can also operate the communicator with the Braille line, allowing the exchange between written information between the Braille and ordinary character literacy codes. It is essential to prepare the Braille Line configurations for both iOS or Android. The handling of the application is based on the generic commands common to all the Keyboards-Braille Line, to start the operation with this system it is recommended to review the Help to understand the specific keys of the communicator.

CTO has a list of predefined messages useful for communication and also allows the deafblind user to pre-record their own. These messages are of the type: Request for help, shopping, bus, subway, taxi, bank, doctors and miscellaneous.

The tests have been carried out with a Xioami A1 mobile phone with Android 8.0 operating system



  • User experience: 4 5 on.
    This criterion is linked to the user's assessment of the product or application
  • Technical benefits: 5 5 on.
    Description of the quality of the technical specifications of the technological solution
  • Accessibility: 5 5 on.
    It is the degree to which people can use or access a product, technological solution or service, regardless of their technical, cognitive or physical capabilities.

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