Add example images

Author: stephenmcgruer

images/ux-guidelines-google-chrome-android-square-logos.png

@@ -147,6 +147,15 @@ the SPC method itself.
 
 ## Appendix: Example transaction confirmation UX screens
 
+This appendix contains some example transaction confirmation UX screens from
+implementors. Where possible, fake entity logos are used, but any other images
+or trademarks are used without permission and without intending to imply any
+support and/or usage of SPC by those entities.
+
+[!Screenshot of the transaction confirmation UX for SPC in Google Chrome for Android. The transaction UX shows two wordmark logos for "Moon Bank" and "Chillipay", followed by the text "Verify its you". Below, the transaction details show that the payee is "The Design Store" at designstore.com, the payment instrument is a "Chase Freedom Flex Card" with last-four digits 1234, and the amount is $120 USD.](images/ux-guidelines-google-chrome-android.png)
+
+[!Screenshot of the transaction confirmation UX for SPC in Google Chrome for Android. The image is identical to the one proceeding it, but has square logos for "Moon Bank" and "Chillipay" which are much harder to read.](images/ux-guidelines-google-chrome-android-square-logos.png)
+
 [instrument.details]: https://w3c.github.io/secure-payment-confirmation/#dom-paymentcredentialinstrument-details
 [instrument.displayName]:https://w3c.github.io/secure-payment-confirmation/#dom-paymentcredentialinstrument-displayname
 [instrument.icon]: https://w3c.github.io/secure-payment-confirmation/#dom-paymentcredentialinstrument-icon