spec: mention that this works for SIM and USIM
diff --git a/docs/imsi-pseudo-spec.adoc b/docs/imsi-pseudo-spec.adoc
index 3b0494f..cc2be96 100644
--- a/docs/imsi-pseudo-spec.adoc
+++ b/docs/imsi-pseudo-spec.adoc
@@ -31,8 +31,8 @@
or Home Subscriber Service (HSS). The next pseudonymous IMSI is sent to the SIM
via Short Message Service (SMS), then a SIM applet overwrites the IMSI of the
SIM with the new value. The only component that needs to be changed in the
-network besides the SIM is the HLR/HSS, therefore it should be possible even
-for a Mobile Virtual Network Operator (MVNO) to deploy this privacy
+network besides the SIM/USIM is the HLR/HSS, therefore it should be possible
+even for a Mobile Virtual Network Operator (MVNO) to deploy this privacy
enhancement.
=== Summary of Existing Location Updating Procedures in RAN and CN
@@ -170,6 +170,7 @@
=== SIM Provisioning
+IMSI pseudonymization as specified by this document works with SIM and USIM.
The HLR is allocating a pseudonymous IMSI for the subscriber. This pseudonymous
IMSI is stored as IMSI on the subscriber's SIM instead of the real IMSI.