Look up CPLDC - https://en.wikipedia.org/wiki/Controller%E2%80%93pilot_data_link_communications https://en.wikipedia.org/wiki/Controller%E2%80%93pilot_data_...

Look up CPLDC - https://en.wikipedia.org/wiki/Controller%E2%80%93pilot_data_link_communications https://en.wikipedia.org/wiki/Controller%E2%80%93pilot_data_... This is how big operations handle clearances today, complete with integration into the FMS. The pilot simply reviews the clearance and accepts it.