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"Hungry for the Hack, Hungry for the Axe!"

June 27-28



David Mendez Gonzalez, Norman Usenkanov, Prasanna R Balasubramani, Ravishankar Balasubramani

Drowsy driving results in numerous fatalities in our community & beyond. Dozer-Tazer uses the smartphone’s front camera to monitor driver’s facial expressions in real time. If the app detects drowsiness, it will alert the driver (vibrate smartwatch, sound an alarm, ask questions) and text / call / email the emergency contact. The app also allows friends and family to create rewards to motivate their loved ones to drive safely.

Friends & family pledge a reward to a driver using Venmo. Dozer-Tazer stores the access_token in MongoDB. When the driver reaches the destination without dozing off (setting off the alarms), he/she can claim the pre-authorized reward. If the app helped him/her remain alert, he/she can thank Dozer-Tazer by using Braintree. The app uses Braintree's easy-to-use drop-in UI for Android - which instantly enables collecting payments through PayPal/Venmo/credit cards.

Since the app helped the driver, he/she can also choose to reciprocate by helping others. The team integrated JustGiving (which in-turn has PayPal integration) to connect him/her with a charity associated with road accident recovery.

Drowsiness detection is further enhanced by a “hardware hack”, composed by a Node.js app running Sails and Mongo on Digital Ocean, connected to an Android phone to detect events and Spark with LEDs.

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2nd place

Aaron Leon, Kyle Mattimore, Ryan Hamilton, Stephen Huh

A lovingly personalized approach to help your elderly loved ones access technology services that we young'ns take for granted.

Despite the ever increasing convenience of on-demand service applications, older generations are being left out by the inconveniences of newer technology. With, friends and family can create a completely customized profile for their elderly loved ones with information ranging from home address to meal preferences. Utilizing this information, dynamically generates a phone tree with interactive voice response technology to serve the user’s needs (e.g. transportation, food, laundry, groceries, etc), allowing even land line phones to access the convenience of mobile applications. To abstract the entire process in the backend server, uses the Twilio API to handle phone communications and the Braintree API to handle payments such that otherwise inaccessible services can be as easy as the push of a button.

Think speed-dial — but for apps and services.

3rd place


Mohammed Sadath Hussain Shaik, Shafi ulla, Srujana Bobba

Hawkers4Change provides both job seekers and employers with valuable data, by offering insights based on online presence on websites like Stack Overflow, LinkedIn, GitHub etc. The platform caters to candidates, with technical or non-technical backgrounds, and identifies relevant information automatically, like the number of followers, badges earned, number of stars on repositories etc.

To build the app, the team used Python, Flask, OAuth2 and jQuery. The payment process is done via PayPal alongside Twilio for sms and email notifications. The platform was developed on Unix with servers on Heroku and Amazon Web Services.

Chicago Judges_



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November 14-15

PayPal Town Hall
2161 N. First Street
San Jose, CA 95131

A true global competition where the City Champions face off, compete, conquer and claim $100,000 USD and the title of The Ultimate Hackers For Good.

Can't make it?
Join the livestream!


  • How do I register?

    Select your city of choice from the list. Registration is open 24/7. May the best hack team win!

  • Can I bring a team?

    Yes, you can bring your friends or team up with other hackers on site. You can hack solo, or in a team of a maximum of 4 members. No matter what you choose, be ready to battle!

  • What kind of code can I write?

    All breeds of code welcome.

  • Do I need to integrate PayPal, Braintree or Venmo into my hack?

    Yes, PayPal, Braintree or Venmo must be the sole payment method included in your hack in order to be eligible for the BattleHack competition.

  • How to win $100,000 USD

    Win a City BattleHack. Get flown, fed and cared for at our World Finals. Beat all other City Champions with code that impresses everyone on the planet. Be crowned the Ultimate Hackers For Good.

  • How is the hack structured?

    BattleHacks are full of 24+ hours of awesome stuff. In general, on Day 1 registration opens, you arrive, scope and share skills, create teams, meet judges, and then our gong hits and hacking begins. Add gourmet food, food and more food. Hack through the night, or grab a nap, beer break, and maybe even a massage or two. On Day 2, we have rehearsals, more food, and hack till you hear our gong, signaling the end of hacking! Teams present their apps, judging occurs and prizes are awarded.
    Check your BattleHack City’s registration page for specific timeline details.

  • What can we win?

    Glory! Fame! And oh yeah, you get some other good stuff! First place winners get our epic axe, flight and hotel accommodations to the World Finals in Silicon Valley, and a chance to $100K USD, no strings attached. Fear not, there's a slew of other goodies, and of course local partner prizes, and all our BattleHack swag!

  • Do you own my hack?

    No, this puppy is yours, born and bred from BattleHack love. BattleHack is for you to have some fun, do some good -- and have a chance to win $100K USD.

  • Should I bring my pyjamas?

    Expect to stay overnight, so bring whatever you need to get you through a 24-hour hackfest. We’ll provide some sleep spaces for those who need to crash or when energy drinks start to ebb. Remember you are in a public forum, so do cover up.