Upgrade to Pro
— share decks privately, control downloads, hide ads and more …
Speaker Deck
Features
Speaker Deck
PRO
Sign in
Sign up for free
Search
Search
DevTalks Bucharest 2015 - A Credit Card Walks i...
Search
Cristiano Betta
June 11, 2015
Technology
0
520
DevTalks Bucharest 2015 - A Credit Card Walks into a Bar...
My talk from DevTalks Bucharest 2015
Cristiano Betta
June 11, 2015
Tweet
Share
More Decks by Cristiano Betta
See All by Cristiano Betta
Docs as Engineering - DevRelCon London 2019
cbetta
0
130
DevRelCon London 2019 - Developer Experience Workshop
cbetta
0
130
DevRelCon London 2019 - Developer Experience Workshop
cbetta
0
270
The 7 Deadly Sins of Developer Experience (DevRelCon Tokyo)
cbetta
0
4k
The State of Encryption
cbetta
0
340
Developer Experience Workshop
cbetta
1
560
The 7 Deadly Sins of Developer Onboarding
cbetta
0
180
A brick by brick guide to developer experience
cbetta
2
620
Hackathons Workshop
cbetta
0
270
Other Decks in Technology
See All in Technology
スキルだけでは満たせない、 “組織全体に”なじむオンボーディング/Onboarding that fits “throughout the organization” and cannot be satisfied by skills alone
bitkey
0
160
ExaDB-XSで利用されているExadata Exascaleについて
oracle4engineer
PRO
3
200
AWSではじめる Web APIテスト実践ガイド / A practical guide to testing Web APIs on AWS
yokawasa
7
590
Raycast AI APIを使ってちょっと便利な拡張機能を作ってみた / created-a-handy-extension-using-the-raycast-ai-api
kawamataryo
0
210
php-conference-nagoya-2025
fuwasegu
0
150
開発組織を進化させる!AWSで実践するチームトポロジー
iwamot
1
160
サイト信頼性エンジニアリングとAmazon Web Services / SRE and AWS
ymotongpoo
7
1.3k
分解して理解する Aspire
nenonaninu
2
950
CDKのコードを書く環境を作りました with Amazon Q
nobuhitomorioka
1
160
Raycast Favorites × Script Command で実現するお手軽情報チェック
smasato
1
140
遷移の高速化 ヤフートップの試行錯誤
narirou
6
1k
ESXi で仮想化した ARM 環境で LLM を動作させてみるぞ
unnowataru
0
160
Featured
See All Featured
Documentation Writing (for coders)
carmenintech
67
4.6k
Testing 201, or: Great Expectations
jmmastey
42
7.2k
JavaScript: Past, Present, and Future - NDC Porto 2020
reverentgeek
47
5.2k
Building Better People: How to give real-time feedback that sticks.
wjessup
367
19k
Fantastic passwords and where to find them - at NoRuKo
philnash
51
3k
Six Lessons from altMBA
skipperchong
27
3.6k
Statistics for Hackers
jakevdp
797
220k
Exploring the Power of Turbo Streams & Action Cable | RailsConf2023
kevinliebholz
30
4.6k
jQuery: Nuts, Bolts and Bling
dougneiner
63
7.7k
Facilitating Awesome Meetings
lara
52
6.2k
The World Runs on Bad Software
bkeepers
PRO
67
11k
Sharpening the Axe: The Primacy of Toolmaking
bcantrill
40
2k
Transcript
@cbetta @braintree_dev A Credit Card Walks into a Bar... by
Cristiano Betta 1 Developer Advocate @braintree_dev A talk on credit cards in eCommerce
@cbetta @braintree_dev A Credit Card Form Walks into a Bar...
A talk on credit cards in eCommerce
@cbetta @braintree_dev A Credit Card Form Walks into a Bar...
A talk on credit cards in eCommerce A series of bad jokes Developer Advocate @braintree_dev by Cristiano Betta
@cbetta @braintree_dev
@cbetta @braintree_dev
@cbetta @braintree_dev A Credit Card Walks into a Bar...
@cbetta @braintree_dev he says to the bartender, “I’ve been having
a hard time meeting people” the bartender says: “Wait, aren’t you supposed to be good at generating...”
@cbetta @braintree_dev “interest”
@cbetta @braintree_dev THANK YOU!
@cbetta @braintree_dev I <3 U Bucharest
@cbetta @braintree_dev A Credit Card Walks into a Bar_
@cbetta @braintree_dev I have a Cat
@cbetta @braintree_dev Who has a “special” condition
@cbetta @braintree_dev 14
@cbetta @braintree_dev But he thinks he is the king of
the house
@cbetta @braintree_dev
@cbetta @braintree_dev Actually he has a kidney condition
@cbetta @braintree_dev People always want to see more photos and
videos
@cbetta @braintree_dev especially kids
@cbetta @braintree_dev so...
@cbetta @braintree_dev I wrote an application that...
@cbetta @braintree_dev charges people money to see his face
@cbetta @braintree_dev
@cbetta @braintree_dev
@cbetta @braintree_dev
@cbetta @braintree_dev
@cbetta @braintree_dev I know what you are thinking...
@cbetta @braintree_dev I am an a**hole
@cbetta @braintree_dev I am actually raising money for his kidney
surgery
@cbetta @braintree_dev I promise!
@cbetta @braintree_dev
@cbetta @braintree_dev A Credit Card Form Walks into a Bar...
@cbetta @braintree_dev the bartender says, “Why do you keep coming
in here day after day ?” The credit card form looks at him miserably says “I’m just looking for some..."
@cbetta @braintree_dev “validation”
@cbetta @braintree_dev
@cbetta @braintree_dev
@cbetta @braintree_dev Things people should not do when building a
Credit Card Form
@cbetta @braintree_dev Things I think you should not do when
building a Credit Card Form
@cbetta @braintree_dev
@cbetta @braintree_dev baymard.com/lists/cart-abandonment-rate
@cbetta @braintree_dev 1.
@cbetta @braintree_dev Add a CAPTCHA
@cbetta @braintree_dev CAPTCHA Completely Automated Public Turing test to tell
Computers and Humans Apart
@cbetta @braintree_dev
@cbetta @braintree_dev
@cbetta @braintree_dev
@cbetta @braintree_dev
@cbetta @braintree_dev
@cbetta @braintree_dev
@cbetta @braintree_dev CAPTCHA Completely Automated Public Turing test to tell
Computers and Humans Apart
@cbetta @braintree_dev CAPTCHA Completely Automated Process That Causes Headaches and
Anger
@cbetta @braintree_dev 2.
@cbetta @braintree_dev Ask users to register
@cbetta @braintree_dev Ask users to register ...before purchasing
@cbetta @braintree_dev
@cbetta @braintree_dev
@cbetta @braintree_dev
@cbetta @braintree_dev
@cbetta @braintree_dev
@cbetta @braintree_dev
@cbetta @braintree_dev
@cbetta @braintree_dev
@cbetta @braintree_dev
@cbetta @braintree_dev A Credit Card Form Walks into a Bar...
@cbetta @braintree_dev the bartender says, “I haven’t seen you in
a while!” The credit card form looks at him and says “Yeah, I had to go to jail. I was...”
@cbetta @braintree_dev “Charged with bad humour"
@cbetta @braintree_dev 3.
@cbetta @braintree_dev Ask me for the credit card type?
@cbetta @braintree_dev
@cbetta @braintree_dev
@cbetta @braintree_dev
@cbetta @braintree_dev * totally copied from Wikipedia
@cbetta @braintree_dev
@cbetta @braintree_dev
@cbetta @braintree_dev
@cbetta @braintree_dev
@cbetta @braintree_dev
@cbetta @braintree_dev jquerycreditcardvalidator.com
@cbetta @braintree_dev
@cbetta @braintree_dev creditcardjs.com
@cbetta @braintree_dev
@cbetta @braintree_dev I <3 Braintree
@cbetta @braintree_dev obviously...
@cbetta @braintree_dev
@cbetta @braintree_dev
@cbetta @braintree_dev
@cbetta @braintree_dev github.com/braintree/card-validator
@cbetta @braintree_dev
@cbetta @braintree_dev 4.
@cbetta @braintree_dev C.V.Who?
@cbetta @braintree_dev
@cbetta @braintree_dev
@cbetta @braintree_dev
@cbetta @braintree_dev
@cbetta @braintree_dev
@cbetta @braintree_dev
@cbetta @braintree_dev jessepollak.github.io/card
@cbetta @braintree_dev
@cbetta @braintree_dev
@cbetta @braintree_dev
@cbetta @braintree_dev kenkeiter.com/skeuocard
@cbetta @braintree_dev
@cbetta @braintree_dev
@cbetta @braintree_dev
@cbetta @braintree_dev
@cbetta @braintree_dev
@cbetta @braintree_dev
@cbetta @braintree_dev Hosted Fields
@cbetta @braintree_dev braintreepayments.com/features/hosted-fields
@cbetta @braintree_dev
@cbetta @braintree_dev 5.
@cbetta @braintree_dev You don’t format dates as they are on
my card
@cbetta @braintree_dev
@cbetta @braintree_dev
@cbetta @braintree_dev
@cbetta @braintree_dev 6.
@cbetta @braintree_dev 6.
@cbetta @braintree_dev A Credit Card Form Walks into a Bar...
@cbetta @braintree_dev he tries to pick up someone at the
bar, They turn him down. The credit card form looks at the bartender and says “Well, this is awkward normally I’m the one who..."
@cbetta @braintree_dev “Declines”
@cbetta @braintree_dev 6.
@cbetta @braintree_dev You don’t validate my card number inline
@cbetta @braintree_dev Luhn Algorithm
@cbetta @braintree_dev 4217 6511 1111 1119
@cbetta @braintree_dev 4217 6511 1111 1119 9111 1111 1156 7124
@cbetta @braintree_dev 4217 6511 1111 1119 9111 1111 1156 7124
9212 1212 1213 7228
@cbetta @braintree_dev 14 + 6 + 11 + 19 =
50 4217 6511 1111 1119 9111 1111 1156 7124 9212 1212 1253 7228
@cbetta @braintree_dev 50 % 10 == 0 ? 4217 6511
1111 1119 14 + 6 + 11 + 19 = 50 9111 1111 1156 7124 9212 1212 1253 7228
@cbetta @braintree_dev
@cbetta @braintree_dev
@cbetta @braintree_dev
@cbetta @braintree_dev
@cbetta @braintree_dev
@cbetta @braintree_dev
@cbetta @braintree_dev
@cbetta @braintree_dev
@cbetta @braintree_dev 7.
@cbetta @braintree_dev 7.
@cbetta @braintree_dev 6b.
@cbetta @braintree_dev You don’t know your limits!
@cbetta @braintree_dev Card! Number of Digits! AMEX! 15! Visa! 13
or 16! MasterCard! 16! Discover! 16!
@cbetta @braintree_dev
@cbetta @braintree_dev
@cbetta @braintree_dev
@cbetta @braintree_dev
@cbetta @braintree_dev
@cbetta @braintree_dev
@cbetta @braintree_dev 7.
@cbetta @braintree_dev You don’t remember me
@cbetta @braintree_dev
@cbetta @braintree_dev
@cbetta @braintree_dev
@cbetta @braintree_dev
@cbetta @braintree_dev
@cbetta @braintree_dev
@cbetta @braintree_dev 8.
@cbetta @braintree_dev You remember too much
@cbetta @braintree_dev And then you lose my details!
@cbetta @braintree_dev 2014 Home Depot 56M JP Morgan Chase 76M
Staples 1.6M
@cbetta @braintree_dev Tokenization
@cbetta @braintree_dev
@cbetta @braintree_dev
@cbetta @braintree_dev One more joke?
@cbetta @braintree_dev A Credit Card Form Walks into a Bar...
@cbetta @braintree_dev the bartender says, “You are new to this
joint aren’t you?” The credit card form looks at him and says “Yeah, I just..."
@cbetta @braintree_dev “Discovered it”
@cbetta @braintree_dev
@cbetta @braintree_dev 9.
@cbetta @braintree_dev You have a “reset” button
@cbetta @braintree_dev
@cbetta @braintree_dev
@cbetta @braintree_dev 10.
@cbetta @braintree_dev Where was I again?
@cbetta @braintree_dev
@cbetta @braintree_dev
@cbetta @braintree_dev That’s all folks!
@cbetta @braintree_dev Encore?
@cbetta @braintree_dev An American Express Walks into a Bar in
Moscow...
@cbetta @braintree_dev the bartender says, “Sorry mate, You aren’t allowed
in here without a...”
@cbetta @braintree_dev “VISA”
@cbetta @braintree_dev
@cbetta @braintree_dev baddonationforms.tumblr.com
@cbetta @braintree_dev THANK YOU!
@cbetta @braintree_dev Cristiano Betta Developer Advocate Braintree_PayPal.
[email protected]
slideshare.net/cbetta braintreepayments.com
@braintree_dev @cbetta