diff --git a/client/drivers/data_structures.py b/client/drivers/data_structures.py
index cbb020a..12cca77 100644
--- a/client/drivers/data_structures.py
+++ b/client/drivers/data_structures.py
@@ -201,6 +201,24 @@ def set_last_plant_time(self, time: datetime) -> None:
         """
         self._last_plant_time = time
 
+    def accept_new_posture_data(
+        self, posture_data: List[float]
+    ) -> None:  # TODO: Refine type signature
+        """
+        Update the internal store of posture data for the OLED display.
+
+        Args:
+            posture_data : List[float]
+                New posture data to accept and merge with the current state of this object.
+
+        TODO: Implement me!
+        """
+        # DEBUG:
+        print("<!> accept_new_posture_data()")
+        # :DEBUG
+        for datum in posture_data:
+            self._posture_data.put_nowait(datum)
+
 
 ## SECTION: Hardware packaged together
 
diff --git a/client/drivers/login_system.py b/client/drivers/login_system.py
index 0ce37fa..15ed2ce 100644
--- a/client/drivers/login_system.py
+++ b/client/drivers/login_system.py
@@ -25,7 +25,7 @@
     Status.TOO_MANY_FACES.value: "Too many faces detected",
     Status.NO_MATCH.value: "Could not match face",
 }
-QUIT_INSTRUCTIONS = "Right button to quit"
+QUIT_INSTRUCTIONS = "Right: quit"
 
 Action = Callable[[HardwareComponents], int]
 
@@ -44,9 +44,9 @@ def handle_authentication(hardware: HardwareComponents) -> int:
     while True:
         _log_and_send(
             hardware,
-            ["Left button to login",
-            "Right button to register",
-            "Double press right button to reset data"]
+            ["Left: login",
+            "Right: register",
+            "Double press right: reset data"]
         )
         button = hardware.wait_for_button_press()
 
@@ -82,7 +82,7 @@ def _loop_action(hardware: HardwareComponents, action: Action) -> int:
 
 def _attempt_login(hardware: HardwareComponents) -> int:
     capturer = RaspCapturer()
-    messages = ["Press left button to take photo", f"{QUIT_INSTRUCTIONS}"]
+    messages = ["Left: take photo", f"{QUIT_INSTRUCTIONS}"]
     _log_and_send(hardware, messages, message_time=0)
 
     button_pressed = hardware.wait_for_button_press()
@@ -106,7 +106,7 @@ def _attempt_register(hardware: HardwareComponents) -> int:
     faces: list[np.ndarray] = []
     for i in range(NUM_FACES):
         messages = [
-            f"Press left button to take photo {i + 1}/{NUM_FACES}",
+            f"Left: take photo {i + 1}/{NUM_FACES}",
             f"{QUIT_INSTRUCTIONS}"
         ]
         _log_and_send(hardware, messages, message_time=0)