diff --git a/esphome/cat-medication-tracker.yaml b/esphome/cat-medication-tracker.yaml
index 1451298..607fc70 100644
--- a/esphome/cat-medication-tracker.yaml
+++ b/esphome/cat-medication-tracker.yaml
@@ -132,17 +132,26 @@ touchscreen:
     spi_id: tft_spi
     cs_pin: GPIO33
     interrupt_pin: GPIO36
+    threshold: 400
     calibration:
       x_min: 280
       x_max: 3850
       y_min: 340
       y_max: 3860
-    on_touch:
+    on_release:
       then:
         - lambda: |-
+            // Ignore touches at edges (phantom touches usually report at extremes)
             int touch_x = touch.x;
             int touch_y = touch.y;
             
+            // Filter out phantom touches (typically at corners/edges)
+            if (touch_x < 10 || touch_x > 230 || touch_y < 10 || touch_y > 310) {
+              return;
+            }
+            
+            ESP_LOGI("touch", "Valid touch at x=%d, y=%d", touch_x, touch_y);
+            
             // Penelope button bounds: x=30-210, y=60-140
             if (touch_x >= 30 && touch_x <= 210 && touch_y >= 60 && touch_y <= 140) {
               id(penelope_medicated).toggle();