Bluetooth technology has been around now for over 20 years, becoming faster, more efficient and more accessible during that time. Bluetooth Low Energy (BLE) technology was created as a low energy option for a device that could last a long period of time with a single battery.

A while back, whilst trying to think of possible internal projects that we could work on to level up the team's skills, we had the idea to create a digital business card. We live in a world where everything is going digital, everybody is more eco-conscious and mobile phones are our constant companions.

Within the Tech world there has always been this insatiable quest for the holy grail of UI libraries. One that works across ALL platforms. Android, iPhone AND Web. Imagine having only one code base to maintain / bugfix / update. Think of the time you could save when testing or doing design reviews.

Part Five:

Deploying the smart contract to a live Ethereum network

Part Five: Creating a front-end for the Decentralised Application

Part Four:

Deploying the smart contract to a live Ethereum network

5 part, blog series on the basics of building a full-stack decentralised application to deploy on the Ethereum network.

Part Three:

Deploying the smart contract to a local network

5 part, blog series on the basics of building a full-stack decentralised application to deploy on the Ethereum network.

Part Two:
Testing the smart contract.

5 part, blog series on the basics of building a full-stack decentralised application to deploy on the Ethereum network.

Part One:
Building the smart contract.

5 part, blog series on the basics of building a full-stack decentralised application to deploy on the Ethereum network.

Images are by far the greatest bottleneck for performance on the web. As a site grows and gains visual complexity over time it can become increasingly sluggish and start to underperform.

We look at what you can do to increase your reach to those people on slower connections and how to satisfy your users by ensuring your site or app loads within an acceptable time frame.

At the end of this tutorial, you should have a serverless API with production and development environments running on AWS using Amazon Cognito, DynamoDB, API Gateway, and Lambdas. We will use Amplify CLI to configure all this so as to avoid the nightmare of having to set up the connections between these services manually. We will also add a front end that is capable of consuming this API.

See how two veterans have connected thousands of their brothers and sisters in arms across Australia, with just an app.

It's out with the old tech and in with the new! Or is it?