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The basis of the project was to enable interoperation of the co-payment participants’ smartphones over Bluetooth LE protocol. The payments are transferred by means of REST API which was provided by the organizer of the hackathon.

Task

Each year Citi holds the Citi Mobile Challenge hackathon in which contestants are challenged to develop innovative mobile applications for their online banking platforms. Citi selects the best solutions and implements them into the business. IT companies and start-ups from around the world take part in the hackathon. In 2015 First Line Software team participated in the fest and developed an application which allows individuals to split the charge for a restaurant dining check.

Solution

The basis of the project was to enable interoperation of the co-payment participants’ smartphones over Bluetooth LE protocol. The payments are transferred by means of REST API which was provided by the organizer of the hackathon. 

Use of the app is intended for consumer bank card users. One of the co-payers creates a cyber account and enters the total sum. Other participants join the account by means of their smartphones and confirm their specific payment amount. The money is transferred from each co-payer’s card to the account of the payment initiator. It is assumed that the sum will be shared equally by all participants; however it is possible to change the split by agreement of the parties.

The most challenging part of this project was the design and implementation of the protocol for exchange of payment information within close range over Bluetooth LE protocol. The mobile app displays all cyber accounts created nearby and the co-payers need to select the correct account. The device of the payment initiator functions as a server (Peripheral), and devices of other participants represent clients (Central). The device interoperation process is not dependent on the specific operating system used in this solution and can easily be extended to other systems in the future.

Result

The application developed by First Line Software was among several that made it to the finals of the Citi Mobile Challenge in the EMEA region.

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Client References

I want to express my gratitude for all of your team’s hard work and support over the last few months. Our project is officially live and we could not have done it without your assistance. I especially would like to thank Alex for his extra help this weekend. I understand it was at the last minute and late nights for him. We are very grateful for all that he has done for us.

Senior Project Manager, the US software development company

Your quality of work is exceptional, and your flexible approach has allowed us to build and deploy a large amount of complex functionality in a very short space of time. Kudos to everyone for their professionalism and for delivering results that exceeded our expectations.

CEO, leading social media analytics provider

We have never had a better release that we can think of. And that is all because of your hard and dedicated work. So here is a big THANK YOU to everyone from all of us!

Editor, leading Scandinavian newspaper

For a software vendor like ourselves, picking the right development partner is crucial. First Line’s technical expertise and solid project management, coupled with their proficiency in Agile methodologies, have made them an integral part of our product development group.

VP Product Development, leading enterprise software vendor

Our First Line Team has been doing a great job. All of the guys check in great code, and they have a forward thinking mindset, not a feature-to-feature approach. They are also very open in terms of sharing knowledge, which is critical to running productive distributed teams.

Application Development Director, global marketing company

We've all learned a lot from you, and it is great working with you.

Application Development Director, global marketing company

The First Line team has an excellent process and we can learn from your team and improve.

Product Owner, Strategic Software Consultancy

I would like to thank the First Line development team for their dedication and high level of quality in their work. Despite being thousands of miles apart, we have been able to work quickly, effectively, and intelligently. Your team has been a major part of why we have been successful thus far.

VP Engineering, e-learning startup

First Line is a great technology partner capable of delivering complex, ‘industrial grade’ projects. They have demonstrated strong technical competence and solid understanding of the media and publishing domain. We have also been very impressed by the management team's attention to our needs and commitment to our success.

CEO, leading European digital media company

Your effort is the #1 reason that this project is going so well. I've worked with a lot of teams over the years and there are very few teams that I trust and respect. When you are given a task or feature, I never have to worry whether or not it will be accomplished on time and I never worry about the quality - you always deliver.

Architect, Strategic Software Consultancy

The team we put together in the last half of this year is one of the most productive, skilled and enjoyable I’ve ever worked on. It’s great to see the product brought to life, and I’m proud to work with all you folks.

Senior Architect, Fortune 100 company

The First Line Software team is professional, results driven, and proactive. I know that when we provide requirements for new functionality, they will not only deliver on the scope of what has been asked but will look beyond and give insight into how we can make our product even better. It has been a privilege to work with First Line Software, and I look forward to continuing our partnership in future.

VP, global marketing company
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