diff --git a/sp800-63a/sec4_ial.md b/sp800-63a/sec4_ial.md
index e86f1994..43bfc258 100644
--- a/sp800-63a/sec4_ial.md
+++ b/sp800-63a/sec4_ial.md
@@ -161,7 +161,8 @@ The CSP SHALL support in-person or remote identity proofing. The CSP SHOULD offe
The CSP SHOULD send a notification of proofing to a confirmed address of record.
The CSP MAY provide an enrollment code directly to the subscriber if binding to an authenticator will occur at a later time.
The enrollment code SHALL be valid for a maximum of 7 days.
-
+
+
If the CSP performs remote proofing (unsupervised):
- The CSP SHALL send an enrollment code to a confirmed address of record for the applicant.
@@ -174,7 +175,8 @@ The CSP SHALL support in-person or remote identity proofing. The CSP SHOULD offe
- 30 days, when sent to a postal address of record outside the contiguous United States;
- 10 minutes, when sent to a telephone of record (SMS or voice);
- 24 hours, when sent to an email address of record.
-
+
+
The CSP SHALL ensure the enrollment code and notification of proofing are sent to different addresses of record. For example, if the CSP sends an enrollment code to a phone number validated in records, a proofing notification will be sent to the postal address validated in records or obtained from validated and verified evidence, such as a driver's license.