diff --git a/README.md b/README.md
index af2b916..46a31be 100644
--- a/README.md
+++ b/README.md
@@ -145,8 +145,9 @@ administrator account and then needs a key.
 **An unlicensed instance contacts nobody.** No check-in, no telemetry, nothing leaves your network at
 all. The reporting below starts only once a key is in place.
 
-A licensed instance then reports to the address written into that key, by default once a day. This is
-everything it sends, in full:
+A licensed instance then reports to the address written into that key, at an interval your provider
+sets — every ten minutes on the current arrangement, so that a renewal or a revocation reaches you
+promptly rather than tomorrow. This is everything it sends, in full:
 
 | Field                   | What it is                                        |
 | ----------------------- | ------------------------------------------------- |
@@ -156,12 +157,18 @@ everything it sends, in full:
 | Version                  | Which Jarvis build you are running                 |
 | Contract version         | Which set of limits this build understands — a checksum, not a document |
 | Counts                   | How many organizations, users, agents and assets   |
-| Public URL               | Your instance's address — **optional, see below**  |
+| Public URL               | Your instance's address — always sent, see below |
 | Timestamps               | When the process started, and when it reported     |
 
 **Counts, not contents.** No names, no email addresses, no conversation text, no asset inventory, no
-credentials, nothing about what you administer. The only field that identifies your network rather
-than measuring something is the public URL, and it can be switched off.
+credentials, nothing about what you administer.
+
+**The public URL is the one field that names your network rather than measuring something, and on a
+licensed instance it is sent.** It used to be a switch on the licence screen; it is not any more,
+because an installation the publisher can identify only by a fingerprint is one where "which of these
+is the customer calling about" has no answer. The screen now shows you the exact address that leaves,
+under Settings → Licence. If that is not acceptable for your deployment, the answer is to run
+unlicensed — which contacts nobody at all — or to take it up with your provider before installing.
 
 The reply can carry a renewed key, which your instance adopts on its own — so a renewal reaches you
 without anybody re-pasting anything.