brltty binary package in Ubuntu Focal arm64

 BRLTTY is a daemon which provides access to the console (text mode)
 for a blind person using a braille display. It drives the braille
 display and provides complete screen review functionality.
 The following display models are supported:
  * Alva/Optelec (ABT3xx, Delphi, Satellite, Braille System 40, BC 640/680)
  * Baum
  * BrailComm
  * BrailleLite
  * BrailleNote
  * Cebra
  * EcoBraille
  * EuroBraille (AzerBraille, Clio, Esys, Iris, NoteBraille, Scriba)
  * Freedom Scientific (Focus and PacMate)
  * Handy Tech
  * HIMS (Braille Sense, SyncBraille)
  * HumanWare (Brailliant)
  * Iris
  * LogText 32
  * MDV
  * Metec (BD-40)
  * NinePoint
  * Papenmeier
  * Pegasus
  * Seika
  * Tieman (Voyager, CombiBraille, MiniBraille, MultiBraille,
            BraillePen/EasyLink)
  * Tivomatic (Albatross)
  * TSI (Navigator, PowerBraille)
  * VideoBraille
  * VisioBraille
 .
 BRLTTY also provides a client/server based infrastructure for applications
 wishing to utilize a Braille display. The daemon process listens for incoming
 TCP/IP connections on a certain port. A shared object library for clients is
 provided in the package libbrlapi0.7. A static library, header files and
 documentation is provided in package libbrlapi-dev. Bindings to other
 programming languages can be found in cl-brlapi (Lisp), libbrlapi-java (Java)
 and python3-brlapi (Python).

Source package