How the faceless system works
For most taxpayers, an assessment is now faceless under Section 144B. A central faceless centre runs it, there is no officer to visit, and every notice and reply goes through the e-filing portal. The process has a built-in protection: before the department makes any change to your income that is against you, it must issue a show-cause notice with a proposal, effectively a draft of the assessment order, and give you time, at least a week, to respond, before the final order is passed.
And you are not forced to argue only in writing. If you ask for a personal hearing, it is held by video conferencing, and the law was changed so that such a hearing must be granted on request, not left to the officer's discretion. So even in a faceless assessment you can put your case to a person, over video, from wherever you are.
Why an NRI is often outside it
Here is the twist that surprises non-residents. The department carved certain categories out of the faceless system, and one of them is the international-tax charges, which is where non-residents' cases usually sit. So an NRI's scrutiny assessment is frequently assigned to a jurisdictional international-taxation officer, a named ward, rather than the faceless centre. That means the general assumption that everything is faceless does not hold for many NRIs; you may have an identifiable officer and ward handling your case.
There is a nuance to keep straight: while the assessment itself may be jurisdictional for an NRI, a reassessment notice, the notice reopening an old year, must still be issued through the faceless route, and NRIs have successfully challenged reopenings that were not. So the two stages can run on different tracks. What does not change is how you engage: you respond through the portal from abroad, you can request the video hearing, and you can authorise a representative in India to act for you. A practising CA identifies which system your case is in, responds to the show-cause and draft order in time, and uses the video-hearing right.