Justin Woo
[Developer Advocate]
Venmo + Braintree + PayPal
[email protected]
@jzwoo
@jzwoo
Creating Mobile Shopping
experiences
@jzwoo
Things
Justin Thinks
merchants
should not* do
when making him
buy more stuff
@jzwoo
Captcha
Completely Automated Public Turing Test To Tell
Computers and Humans Apart
Ask users to
register…
Ask users to register..
before purchasing
Forcing users to
download Native app
@jzwoo
Not auto-detect
UA string
@jzwoo
Don’t Autodetect
Credit Card Type
@jzwoo
http://jquerycreditcardvalidator.com
/
@jzwoo
Not limiting the
number of digits
Card Number of Digits
AMEX 15
Visa 13 or 16
MasterCard 16
Discover 16
http://zdfs.github.io/toscani/
paymentInfo/index.html
@jzwoo
Not provide me a
calendar view when
selecting dates
@jzwoo
Long scrolling lists
@jzwoo
Not show appropriate
keyboard layouts
@jzwoo
http://mobileinputtypes.
com/
@jzwoo
Not disable auto-correct
when appropriate
@jzwoo
<input type="text" autocorrect="off" />
@jzwoo
Creating Mobile Shopping
experiences
@jzwoo
Thinks he can see?!?!
People always want to pet
him..
especially kids!!!
I wrote an application
that….
charges people when they
want to pet him
I know what you are
thinking
I’m actually trying to raise
money for his eye surgery
Justin Woo
[Developer Advocate]
Venmo + Braintree + PayPal
[email protected]
@jzwoo
@jzwoo