diff --git a/sidecar/src/main/kotlin/dev/sanderling/sidecar/DriverBackend.kt b/sidecar/src/main/kotlin/dev/sanderling/sidecar/DriverBackend.kt
index 94ee73b..0470d27 100644
--- a/sidecar/src/main/kotlin/dev/sanderling/sidecar/DriverBackend.kt
+++ b/sidecar/src/main/kotlin/dev/sanderling/sidecar/DriverBackend.kt
@@ -958,6 +958,12 @@ internal fun findBoundsInTree(
         } ==
             true
 
+        "idPrefix" -> attrs["resource-id"]?.let { id ->
+            val local = id.indexOf(":id/")
+            id.startsWith(value) ||
+                (local >= 0 && id.substring(local + 4).startsWith(value))
+        } == true
+
         "text" -> attrs["text"] == value
 
         "desc" -> attrs["content-desc"] == value
diff --git a/sidecar/src/test/kotlin/dev/sanderling/sidecar/DeviceOutputParserTest.kt b/sidecar/src/test/kotlin/dev/sanderling/sidecar/DeviceOutputParserTest.kt
index afbccbd..38422a7 100644
--- a/sidecar/src/test/kotlin/dev/sanderling/sidecar/DeviceOutputParserTest.kt
+++ b/sidecar/src/test/kotlin/dev/sanderling/sidecar/DeviceOutputParserTest.kt
@@ -111,6 +111,25 @@ class DeviceOutputParserTest {
         assertEquals(listOf(5, 6, 7, 8), findBoundsBySelector(tree, "descPrefix:AccountCard")?.toList())
     }
 
+    @Test fun findBoundsBySelectorMatchesIdPrefixWithoutThePackage() {
+        val tree = node(
+            "resource-id" to "root",
+            children = listOf(
+                node(
+                    "resource-id" to "com.example:id/customer_row_abc",
+                    "bounds" to "[1,2,3,4]",
+                ),
+                node("resource-id" to "supplier_row_x", "bounds" to "[5,6,7,8]"),
+            ),
+        )
+        val prefix = findBoundsBySelector(tree, "idPrefix:customer_row_")
+        assertEquals(listOf(1, 2, 3, 4), prefix?.toList())
+        val qualified =
+            findBoundsBySelector(tree, "idPrefix:com.example:id/customer_row")
+        assertEquals(listOf(1, 2, 3, 4), qualified?.toList())
+        assertNull(findBoundsBySelector(tree, "idPrefix:invoice_row_"))
+    }
+
     @Test fun findBoundsBySelectorReturnsNullForBadSelectorOrNoMatch() {
         val tree = node("resource-id" to "com.example:id/x", "bounds" to "[0,0,1,1]")
         assertNull(findBoundsBySelector(tree, "id"))