diff --git a/package.json b/package.json
index aa708e8c..ff1fa19e 100644
--- a/package.json
+++ b/package.json
@@ -15,6 +15,7 @@
     "@odit/license-exporter": "0.2.0",
     "@sveltejs/vite-plugin-svelte": "2.1.1",
     "@types/papaparse": "^5.3.15",
+    "@types/underscore": "^1.13.0",
     "auto-changelog": "2.5.0",
     "prettier": "3.5.3",
     "prettier-plugin-svelte": "3.3.3",
@@ -55,6 +56,7 @@
     "svelte-i18n": "4.0.1",
     "tailwindcss": "^4.1.4",
     "tinro": "0.6.12",
+    "underscore": "^1.13.7",
     "validator": "13.15.0",
     "xlsx": "0.18.5"
   },
diff --git a/pnpm-lock.yaml b/pnpm-lock.yaml
index 5912946b..e133cde3 100644
--- a/pnpm-lock.yaml
+++ b/pnpm-lock.yaml
@@ -53,6 +53,9 @@ importers:
       tinro:
         specifier: 0.6.12
         version: 0.6.12
+      underscore:
+        specifier: ^1.13.7
+        version: 1.13.7
       validator:
         specifier: 13.15.0
         version: 13.15.0
@@ -69,6 +72,9 @@ importers:
       '@types/papaparse':
         specifier: ^5.3.15
         version: 5.3.15
+      '@types/underscore':
+        specifier: ^1.13.0
+        version: 1.13.0
       auto-changelog:
         specifier: 2.5.0
         version: 2.5.0
@@ -730,6 +736,9 @@ packages:
   '@types/papaparse@5.3.15':
     resolution: {integrity: sha512-JHe6vF6x/8Z85nCX4yFdDslN11d+1pr12E526X8WAfhadOeaOTx5AuIkvDKIBopfvlzpzkdMx4YyvSKCM9oqtw==}
 
+  '@types/underscore@1.13.0':
+    resolution: {integrity: sha512-L6LBgy1f0EFQZ+7uSA57+n2g/s4Qs5r06Vwrwn0/nuK1de+adz00NWaztRQ30aEqw5qOaWbPI8u2cGQ52lj6VA==}
+
   adler-32@1.3.1:
     resolution: {integrity: sha512-ynZ4w/nUUv5rrsR8UUGoe1VC9hZj6V5hU9Qw1HlMDJGEJw5S7TfTErWTjMys6M7vr0YWcPqs3qAr4ss0nDfP+A==}
     engines: {node: '>=0.8'}
@@ -2000,6 +2009,9 @@ packages:
     engines: {node: '>=0.8.0'}
     hasBin: true
 
+  underscore@1.13.7:
+    resolution: {integrity: sha512-GMXzWtsc57XAtguZgaQViUOzs0KTkk8ojr3/xAxXLITqf/3EMwxC0inyETfDFjH/Krbhuep0HNbbjI9i/q3F3g==}
+
   undici-types@6.21.0:
     resolution: {integrity: sha512-iwDZqg0QAGrg9Rav5H4n0M64c3mkR59cJ6wQp+7C4nI0gsmExaedaYLNO44eT4AtBBwjbTiGPMlt2Md0T9H9JQ==}
 
@@ -2604,6 +2616,8 @@ snapshots:
     dependencies:
       '@types/node': 22.14.1
 
+  '@types/underscore@1.13.0': {}
+
   adler-32@1.3.1: {}
 
   agent-base@7.1.1:
@@ -3888,6 +3902,8 @@ snapshots:
   uglify-js@3.19.3:
     optional: true
 
+  underscore@1.13.7: {}
+
   undici-types@6.21.0: {}
 
   unicorn-magic@0.1.0: {}
diff --git a/src/components/general/QrCodeScanner.svelte b/src/components/general/QrCodeScanner.svelte
index d4671b07..950657c8 100644
--- a/src/components/general/QrCodeScanner.svelte
+++ b/src/components/general/QrCodeScanner.svelte
@@ -4,8 +4,8 @@
 		Html5QrcodeScanner,
 		Html5QrcodeScanType,
 		Html5QrcodeSupportedFormats,
-		Html5QrcodeScannerState,
 	} from "html5-qrcode";
+	import { debounce } from "underscore";
 
 	export let width;
 	export let height;
@@ -13,23 +13,17 @@
 
 	const dispatch = createEventDispatcher();
 
-	const debounceFunc = (func, delay) => {
-		let timer;
-		return function (...args) {
-			const context = this;
-			clearTimeout(timer);
-			timer = setTimeout(() => {
-				func.apply(context, args);
-			}, delay);
-		};
-	};
-
-	const debouncedDispatch = debounceFunc(function (decodedText) {
-		console.log("dispatchEvent");
-		dispatch("detect", { decodedText });
-	}, 500);
+	const debouncedDispatch = debounce(
+		function (decodedText) {
+			// console.log("dispatchEvent");
+			dispatch("detect", { decodedText });
+		},
+		500,
+		true
+	);
 
 	function onScanSuccess(decodedText, decodedResult) {
+		// console.log("onScanSuccess", decodedText);
 		if (!paused) {
 			debouncedDispatch(decodedText);
 		}