2>
<button onclick="accelerometerTest()">Test accelerometer</button><br>
X : <span id="accel_x"></span><br/>
Y : <span id="accel_y"></span><br/>
Z : <span id="accel_z"></span><br/>
Time : <span id="accel_timestamp"></span><br/>

<h2>BarCodeScanner</h2>
<p>
 <button onclick="BarCodeScan()">Scan a barcode</button><br/>
 Text: <span id="qr_result"></span><br/>
</p>

<h2>Camera</h2>
<button onclick="cameraTestGetPicture()">Test camera (take picture)</button><br>
<button onclick="cameraTestFromPhotoLibrary()">Te