I've got an ASUS BU201LA that also sports a Validity Sensor with Id
0138a:0010.

I got it to work by downloading the source for libfprint from
http://www.freedesktop.org/wiki/Software/fprint/Download/ and adding the
USBID to the source for vfs5011 like this:

*** vfs5011.c.orig      2015-05-14 19:59:06.489565109 +0200
--- vfs5011.c   2015-05-14 19:59:14.133534986 +0200
***************
*** 992,997 ****
--- 992,998 ----
  }
  
  static const struct usb_id id_table[] = {
+       { .vendor = 0x138a, .product = 0x0010 /* vfs5010 */ },
        { .vendor = 0x138a, .product = 0x0011 /* vfs5011 */ },
        { .vendor = 0x138a, .product = 0x0017 /* Validity device from Lenovo 
T440 laptops */ },
        { .vendor = 0x138a, .product = 0x0018 /* one more Validity device */ },

Recompiling results in a libfprint.so.0.0.0 that can be used in the place of 
the one from the ppa.
Using the fingerprint reader shows the same issues as reported by Ruben in #55 
- it works, but
the failure rate when trying to authenticate is quite high.

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https://bugs.launchpad.net/bugs/827669

Title:
  [138a:0018] Validity Sensors fingerprint reader not recognized

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