diff --git a/ROADMAP.md b/ROADMAP.md
index 1d791a8..9eec13b 100644
--- a/ROADMAP.md
+++ b/ROADMAP.md
@@ -87,6 +87,9 @@
     * [x] Remove friend
     * [ ] Manage favourite friends
     * [ ] Manage hidden friends
+  * [x] KakaoTalk ID management
+    * [x] Set/Change ID
+    * [x] Make ID searchable/hidden
 
 <sup>[1]</sup> Sometimes fails with "Invalid body" error
 <sup>[2]</sup> Only recently-sent KakaoTalk messages can be deleted
diff --git a/matrix_appservice_kakaotalk/commands/kakaotalk.py b/matrix_appservice_kakaotalk/commands/kakaotalk.py
index 8b70e3d..093f787 100644
--- a/matrix_appservice_kakaotalk/commands/kakaotalk.py
+++ b/matrix_appservice_kakaotalk/commands/kakaotalk.py
@@ -15,7 +15,7 @@
 # along with this program.  If not, see <https://www.gnu.org/licenses/>.
 from __future__ import annotations
 
-from typing import TYPE_CHECKING
+from typing import TYPE_CHECKING, Awaitable
 import asyncio
 
 from mautrix.bridge.commands import HelpSection, command_handler
@@ -36,6 +36,7 @@ from .typehint import CommandEvent
 
 from ..kt.client.errors import CommandException
 
+SECTION_ACCOUNT = HelpSection("Account management", 35, "")
 SECTION_FRIENDS = HelpSection("Friends management", 40, "")
 SECTION_CHANNELS = HelpSection("Channel management", 45, "")
 
@@ -46,6 +47,84 @@ if TYPE_CHECKING:
     from ..kt.types.bson import Long
 
 
+_CMD_CONFIRM_CHANGE_ID = "confirm-change-id"
+
+@command_handler(
+    needs_auth=True,
+    management_only=False,
+    help_section=SECTION_ACCOUNT,
+    help_text="Set or change your KakaoTalk ID",
+    help_args="<_KakaoTalk ID_>",
+    aliases=["set-id"],
+)
+async def change_id(evt: CommandEvent) -> None:
+    if len(evt.args) != 1:
+        await evt.reply(f"**Usage:** `$cmdprefix+sp {evt.command} <KakaoTalk ID>`")
+        return
+    new_id = evt.args[0]
+    if len(new_id) > 20:
+        await evt.reply("ID must not exceed 20 characters. Please choose a shorter ID.")
+        return
+    await evt.mark_read()
+    if await evt.sender.client.can_change_uuid(new_id):
+        await evt.reply(
+            "Once set, your KakaoTalk ID can be changed only once! "
+           f"If you are sure that you want to change it, type `$cmdprefix+sp {_CMD_CONFIRM_CHANGE_ID}`. "
+            "Otherwise, type `$cmdprefix+sp cancel`."
+        )
+        evt.sender.command_status = {
+            "action": "ID change",
+            "room_id": evt.room_id,
+            "next": _confirm_change_id,
+            "new_id": new_id,
+        }
+    else:
+        await evt.reply(
+           f"Cannot change KakaoTalk ID to `{new_id}`. "
+            "That ID might already be in use or have restricted characters. "
+            "Either try a different ID, or try again later."
+        )
+
+async def _confirm_change_id(evt: CommandEvent) -> None:
+    assert evt.sender.command_status
+    new_id = evt.sender.command_status.pop("new_id")
+    evt.sender.command_status = None
+    await evt.mark_read()
+    try:
+        await evt.sender.client.change_uuid(new_id)
+    except CommandException:
+        await evt.reply(f"Failed to change KakaoTalk ID to `{new_id}`. Try again later.")
+    else:
+        await evt.reply(f"Successfully changed ID to `{new_id}`")
+
+
+@command_handler(
+    needs_auth=True,
+    management_only=False,
+    help_section=SECTION_ACCOUNT,
+    help_text="Allow others to search by your KakaoTalk ID",
+)
+def make_id_searchable(evt: CommandEvent) -> Awaitable[None]:
+    return _set_id_searchable(evt, True)
+
+@command_handler(
+    needs_auth=True,
+    management_only=False,
+    help_section=SECTION_ACCOUNT,
+    help_text="Prevent others from searching by your KakaoTalk ID",
+)
+def make_id_hidden(evt: CommandEvent) -> Awaitable[None]:
+    return _set_id_searchable(evt, False)
+
+async def _set_id_searchable(evt: CommandEvent, searchable: bool) -> None:
+    await evt.mark_read()
+    try:
+        await evt.sender.client.set_uuid_searchable(searchable)
+    except RPCError as e:
+        await evt.reply(str(e))
+    else:
+        await evt.reply(f"Successfully made KakaoTalk ID {'searchable' if searchable else 'hidden'}")
+
 async def _get_search_result_puppet(source: u.User, friend_struct: FriendStruct) -> pu.Puppet:
     puppet = await pu.Puppet.get_by_ktid(friend_struct.userId)
     if not puppet.name_set:
diff --git a/matrix_appservice_kakaotalk/kt/client/client.py b/matrix_appservice_kakaotalk/kt/client/client.py
index e4783a4..2a45fbb 100644
--- a/matrix_appservice_kakaotalk/kt/client/client.py
+++ b/matrix_appservice_kakaotalk/kt/client/client.py
@@ -324,6 +324,20 @@ class Client:
             unread_chat_ids=[c.serialize() for c in unread_chat_ids],
         )
 
+    async def can_change_uuid(self, uuid: str) -> bool:
+        try:
+            await self._api_user_request_void("can_change_uuid", uuid=uuid)
+        except CommandException:
+            return False
+        else:
+            return True
+
+    def change_uuid(self, uuid: str) -> Awaitable[None]:
+        return self._api_user_request_void("change_uuid", uuid=uuid)
+
+    def set_uuid_searchable(self, searchable: bool) -> Awaitable[None]:
+        return self._api_user_request_void("set_uuid_searchable", searchable=searchable)
+
     def list_friends(self) -> Awaitable[FriendListStruct]:
         return self._api_user_request_result(
             FriendListStruct,
diff --git a/matrix_appservice_kakaotalk/user.py b/matrix_appservice_kakaotalk/user.py
index e6c83cd..2cf2c0d 100644
--- a/matrix_appservice_kakaotalk/user.py
+++ b/matrix_appservice_kakaotalk/user.py
@@ -278,8 +278,8 @@ class User(DBUser, BaseUser):
             self.log.warning(f"UUID mismatch: expected {self.uuid}, got {oauth_credential.deviceUUID}")
             self.uuid = oauth_credential.deviceUUID
 
-    async def get_own_info(self) -> SettingsStruct | None:
-        if self._client and (not self._logged_in_info or self._logged_in_info_time + 60 * 60 < time.monotonic()):
+    async def get_own_info(self, *, force: bool = False) -> SettingsStruct | None:
+        if force or self._client and (not self._logged_in_info or self._logged_in_info_time + 60 * 60 < time.monotonic()):
             self._logged_in_info = await self._client.get_settings()
             self._logged_in_info_time = time.monotonic()
         return self._logged_in_info
diff --git a/node/src/client.js b/node/src/client.js
index 7cada60..f053b02 100644
--- a/node/src/client.js
+++ b/node/src/client.js
@@ -834,6 +834,51 @@ export default class PeerClient {
 		return makeCommandResult(receipts)
 	}
 
+	/**
+	 * @param {Object} req
+	 * @param {string} req.mxid
+	 * @param {string} req.uuid
+	 */
+	canChangeUUID = async (req) => {
+		return await this.#getUser(req.mxid).serviceClient.canChangeUUID(req.uuid)
+	}
+
+	/**
+	 * @param {Object} req
+	 * @param {string} req.mxid
+	 * @param {string} req.uuid
+	 */
+	changeUUID = async (req) => {
+		const serviceClient = this.#getUser(req.mxid).serviceClient
+
+		const checkRes = await serviceClient.canChangeUUID(req.uuid)
+		if (!checkRes.success) return checkRes
+
+		return await serviceClient.changeUUID(req.uuid)
+	}
+
+	/**
+	 * @param {Object} req
+	 * @param {string} req.mxid
+	 * @param {boolean} req.searchable
+	 */
+	setUUIDSearchable = async (req) => {
+		const serviceClient = this.#getUser(req.mxid).serviceClient
+		const moreRes = await serviceClient.requestMoreSettings()
+		if (!moreRes.success) {
+			throw new ProtocolError("Error checking status of KakaoTalk ID")
+		}
+		if (!moreRes.result.uuid) {
+			throw new ProtocolError("You do not yet have a KakaoTalk ID")
+		}
+		if (req.searchable == moreRes.result.uuidSearchable) {
+			throw new ProtocolError(`Your KakaoTalk ID is already ${req.searchable ? "searchable" : "hidden"}`)
+		}
+		return await serviceClient.updateSettings({
+			uuid_searchable: req.searchable,
+		})
+	}
+
 	/**
 	 * @param {Object} req
 	 * @param {string} req.mxid
@@ -1174,6 +1219,9 @@ export default class PeerClient {
 				get_participants: this.getParticipants,
 				get_chats: this.getChats,
 				get_read_receipts: this.getReadReceipts,
+				can_change_uuid: this.canChangeUUID,
+				change_uuid: this.changeUUID,
+				set_uuid_searchable: this.setUUIDSearchable,
 				list_friends: this.listFriends,
 				edit_friend: this.editFriend,
 				edit_friend_by_uuid: this.editFriendByUUID,
@@ -1205,11 +1253,15 @@ export default class PeerClient {
 				}
 			} else {
 				resp.command = "error"
-				resp.error = err instanceof ProtocolError ? err.message : err.toString()
-				this.log(`Error handling request ${resp.id} ${err.stack}`)
-				// TODO Check if session is broken. If it is, close the PeerClient
+				if (err instanceof ProtocolError) {
+					resp.error = err.message
+				} else {
+					resp.error = err.toString()
+					this.log(`Error handling request ${resp.id} ${err.stack}`)
+				}
 			}
 		}
+		// TODO Check if session is broken. If it is, close the PeerClient
 		await this.write(resp)
 	}