TWAIN devices policy settings

Last published : Oct 15, 2026
The TWAIN devices section includes policy settings related to the following:
  • Mapping client TWAIN devices, such as digital cameras or scanners
  • Optimizing image transfers from server to client
Note:
TWAIN 2.0 is supported with Citrix Receiver for Windows 4.5.
Related information
ICA® policy settings

Client TWAIN device redirection

TWAIN devices communicate with server-hosted image processing applications by using the TWAIN protocol.
This setting allows or prevents users from accessing TWAIN devices on the user device. By default, TWAIN device redirection is allowed.
The following policy settings are related:
  • TWAIN compression level
  • TWAIN device redirection bandwidth limit
  • TWAIN device redirection bandwidth limit percent

TWAIN compression level

This setting specifies the level of compression of image transfers from client to server. Use Low for best image quality, Medium for good image quality, or High for low image quality. By default, medium compression is applied.