diff --git a/README.md b/README.md
index 3fe1f7a..4c3f104 100644
--- a/README.md
+++ b/README.md
@@ -1,3 +1,37 @@
 # SheetJS + React Native Demo
 
-Complete Reproduction of <https://docs.sheetjs.com/docs/demos/mobile/reactnative#demo>
\ No newline at end of file
+Complete Reproduction of <https://docs.sheetjs.com/docs/demos/mobile/reactnative#demo>
+
+This branch (`RNFA`) demonstrates `react-native-file-access`.
+
+## Installation
+
+1) Install dependencies:
+
+```bash
+npm i
+```
+
+### iOS
+
+2) (iOS only) link iOS project
+
+```bash
+cd ios; pod install; cd ..
+```
+
+3) run the development process:
+
+```bash
+npx react-native run-ios
+```
+
+### Android
+
+4) ensure Java 11 is the current version
+
+5) run the development process:
+
+```bash
+npx react-native run-android
+```
diff --git a/index.js b/index.js
index 41a3fbc..c6cc107 100644
--- a/index.js
+++ b/index.js
@@ -4,6 +4,25 @@ import React, { Component } from 'react';
 import { AppRegistry, StyleSheet, Text, Button, Alert, Image, ScrollView } from 'react-native';
 import { Table, Row, Rows, TableWrapper } from 'react-native-table-component';
 
+import { read, write } from 'xlsx';
+import { pickSingle } from 'react-native-document-picker';
+import { Platform } from 'react-native';
+import { Dirs, FileSystem } from 'react-native-file-access';
+
+async function pickAndParse() {
+  const f = await pickSingle({allowMultiSelection: false, copyTo: "documentDirectory", mode: "open" });
+  let path = f.fileCopyUri;
+  const res = await (await fetch(path)).arrayBuffer();
+  return read(new Uint8Array(res), {type: 'buffer'});
+}
+
+async function writeWorkbook(wb) {
+  const wbout = write(wb, {type:'base64', bookType:"xlsx"});
+  const file = Dirs.DocumentDir + "/sheetjsw.xlsx";
+  await FileSystem.writeFile(file, wbout, "base64");
+  return file;
+}
+
 const make_width = ws => {
   const aoa = utils.sheet_to_json(ws, {header:1}), res = [];
   aoa.forEach((r) => { r.forEach((c, C) => { res[C] = Math.max(res[C]||60, String(c).length * 10); }); });
diff --git a/ios/Podfile.lock b/ios/Podfile.lock
index 36ab9ee..4622582 100644
--- a/ios/Podfile.lock
+++ b/ios/Podfile.lock
@@ -374,8 +374,11 @@ PODS:
   - React-jsinspector (0.72.1)
   - React-logger (0.72.1):
     - glog
-  - react-native-document-picker (8.2.0):
+  - react-native-document-picker (8.2.1):
     - React-Core
+  - react-native-file-access (2.6.0):
+    - React-Core
+    - ZIPFoundation (= 0.9.11)
   - React-NativeModulesApple (0.72.1):
     - hermes-engine
     - React-callinvoker
@@ -490,6 +493,7 @@ PODS:
   - Yoga (1.14.0)
   - YogaKit (1.18.1):
     - Yoga (~> 1.14)
+  - ZIPFoundation (0.9.11)
 
 DEPENDENCIES:
   - boost (from `../node_modules/react-native/third-party-podspecs/boost.podspec`)
@@ -538,6 +542,7 @@ DEPENDENCIES:
   - React-jsinspector (from `../node_modules/react-native/ReactCommon/jsinspector`)
   - React-logger (from `../node_modules/react-native/ReactCommon/logger`)
   - react-native-document-picker (from `../node_modules/react-native-document-picker`)
+  - react-native-file-access (from `../node_modules/react-native-file-access`)
   - React-NativeModulesApple (from `../node_modules/react-native/ReactCommon/react/nativemodule/core/platform/ios`)
   - React-perflogger (from `../node_modules/react-native/ReactCommon/reactperflogger`)
   - React-RCTActionSheet (from `../node_modules/react-native/Libraries/ActionSheetIOS`)
@@ -573,6 +578,7 @@ SPEC REPOS:
     - OpenSSL-Universal
     - SocketRocket
     - YogaKit
+    - ZIPFoundation
 
 EXTERNAL SOURCES:
   boost:
@@ -620,6 +626,8 @@ EXTERNAL SOURCES:
     :path: "../node_modules/react-native/ReactCommon/logger"
   react-native-document-picker:
     :path: "../node_modules/react-native-document-picker"
+  react-native-file-access:
+    :path: "../node_modules/react-native-file-access"
   React-NativeModulesApple:
     :path: "../node_modules/react-native/ReactCommon/react/nativemodule/core/platform/ios"
   React-perflogger:
@@ -691,7 +699,8 @@ SPEC CHECKSUMS:
   React-jsiexecutor: 184eae1ecdedc7a083194bd9ff809c93f08fd34c
   React-jsinspector: d0b5bfd1085599265f4212034321e829bdf83cc0
   React-logger: b8103c9b04e707b50cdd2b1aeb382483900cbb37
-  react-native-document-picker: 495c444c0c773c6e83a5d91165890ecb1c0a399a
+  react-native-document-picker: 69ca2094d8780cfc1e7e613894d15290fdc54bba
+  react-native-file-access: a4398950e02999b5ab97f3055feb7ee28e6615a3
   React-NativeModulesApple: 4f31a812364443cee6ef768d256c594ad3b20f53
   React-perflogger: 3d501f34c8d4b10cb75f348e43591765788525ad
   React-RCTActionSheet: f5335572c979198c0c3daff67b07bd1ad8370c1d
@@ -712,6 +721,7 @@ SPEC CHECKSUMS:
   SocketRocket: f32cd54efbe0f095c4d7594881e52619cfe80b17
   Yoga: 65286bb6a07edce5e4fe8c90774da977ae8fc009
   YogaKit: f782866e155069a2cca2517aafea43200b01fd5a
+  ZIPFoundation: b1f0de4eed33e74a676f76e12559ab6b75990197
 
 PODFILE CHECKSUM: 2250de264ba5adbfd3fe13c5a448d934ea1d4b4d
 
diff --git a/package.json b/package.json
index 82bae7e..430e8d0 100644
--- a/package.json
+++ b/package.json
@@ -13,6 +13,7 @@
     "react": "18.2.0",
     "react-native": "0.72.1",
     "react-native-document-picker": "^8.2.0",
+    "react-native-file-access": "^2.6.0",
     "react-native-table-component": "^1.2.0",
     "xlsx": "https://cdn.sheetjs.com/xlsx-0.20.0/xlsx-0.20.0.tgz"
   },