Update input.md

add eSCL blurb

Author: kyle-ds

indepth/features/input.md

@@ -22,6 +22,32 @@ A local scanner refers to a scanner that is plugged in the same desktop via USB
 
 > As far as `Dynamic Web TWAIN` is concerned, a network scanner is just like a local scanner because its driver has taken care of the network connection behind the scene.
 
+### Scan From an eSCL Scanner
+Many modern scanners and multi-functional printers (MFPs) support the eSCL protocol. The protocol is a vendor-neutral network protocol that allows driverless scanning via ethernet, wireless and USB-connected devices. eSCL-compatible scanners advertise themselves via mDNS so that we can find them easily. mDNS is a zero-configuration service. It is implemented by Apple Bonjour and the open-source Avahi software packages.
+> See [this blog post](https://www.dynamsoft.com/blog/announcement/dynamic-web-twain-escl-scanner/) for more information about eSCL.
+
+#### Scan from an eSCL Scanner to PC
+> The Dynamsoft Service must be installed on the client PC
+
+``` javascript
+//Get a list of eSCL scanners:
+let eSCLDevices = await DWObject.GetDevicesAsync(Dynamsoft.DWT.EnumDWT_DeviceType.ESCLSCANNER);
+
+//Scan documents from the first eSCL scanner:
+let deviceConfiguration = {Resolution:100,IfShowUI:false}; // scanning configuration. Check out the docs to learn more: https://www.dynamsoft.com/web-twain/docs/info/api/WebTwain_Acquire.html#acquireimage
+await eSCLDevices[0].acquireImage(deviceConfiguration, DWObject);
+```
+
+#### Scan from an eSCL Scanner to Android
+> Install the Android Service on the client device from the [Play Store](https://play.google.com/store/apps/details?id=com.dynamsoft.mobilescan).
+
+``` javascript
+let devices = await DWObject.GetDevicesAsync(); // get the devices list
+await DWObject.SelectDeviceAsync(devices[0]); // select the first device
+let deviceConfiguration = {Resolution:100,IfShowUI:false}; // scanning configuration. Check out the docs to learn more: https://www.dynamsoft.com/web-twain/docs/info/api/WebTwain_Acquire.html#acquireimage
+DWObject.AcquireImageAsync(deviceConfiguration); // scan documents with the selected device
+```
+
 ## Capture from cameras
 
 ### Use [DirectShow Cameras]({{site.getstarted}}hardware.html#directshow-cameras)