diff --git a/docs/use/use.md b/docs/use/use.md
index eb7bcc39..813f4699 100644
--- a/docs/use/use.md
+++ b/docs/use/use.md
@@ -238,3 +238,14 @@ TheengsGateway --bindkeys 00:11:22:33:44:55:66 0dc540f3025b474b9ef1085e051b1add
 ```
 
 Theengs Gateway will then use the bindkey 0dc540f3025b474b9ef1085e051b1add to decrypt all advertisements from device 00:11:22:33:44:55:66 and bindkey 6385424e1b0341109942ad2a6bb42e58 for all advertisements from device AA:BB:CC:DD:EE:FF.
+
+## Resolving random private addresses
+If you want to resolve random private addresses into a device's identity address, you need to add an identity resolving key (IRK) for each identity address with the `--identities` argument. For example:
+
+```
+TheengsGateway --identities 00:11:22:33:44:55:66 0dc540f3025b474b9ef1085e051b1add AA:BB:CC:DD:EE:FF 6385424e1b0341109942ad2a6bb42e58
+```
+
+Theengs Gateway will then use the identity resolving key 0dc540f3025b474b9ef1085e051b1add to resolve random private addresses from device 00:11:22:33:44:55:66 and identity resolving key 6385424e1b0341109942ad2a6bb42e58 to resolve random private addresses from device AA:BB:CC:DD:EE:FF.
+
+The identity resolving key can also be specified as a Base64 encoded string, such as `"MGRjNTQwZjMwMjViNDc0YjllZjEwODVlMDUxYjFhZGQ="`.