Tuesday, October 24, 2017

El Lean Canvas, explicado paso a paso

Tengo el honor de ser profesor del curso Startup Innovation Lab, del Plan de Empleo para la Educación Superior, en el que jóvenes canarios en situación de desempleo descubren las principales técnicas de emprendimiento siguiendo la metodología Lean Startup.

Dado que no hay muchos ejemplos prácticos y en español sobre cómo completar el Lean Canvas, he creado un vídeo de 14 minutos en el que se explica, paso a paso, cómo completar el canvas utilizando Spotify como producto de ejemplo.



Éste es el canvas resultante. Espero que sea de utilidad al igual que lo está siendo para mis alumnos.




Sunday, March 26, 2017

Want to be more productive at work? Leave your smartphone at home


I never considered myself a smartphone addict, but it is true that I waste a lot of time checking my phone and responding to personal emails and messages. According to studies [1] and [2], the average user checks the smartphone 80 times per day for 2.42 hours and touches the display 5427 times per day. These figures might seem very high, but I tracked my smartphone usage with BreakFree for one week and they are surprisingly accurate.
A couple of years ago I started using the Pomodoro Technique at work, which blocks smartphone notifications and some websites during the work intervals (25 minutes) and allows you to check them during the scheduled breaks (5 minutes after each work interval). This really helped me be more productive but it requires self-discipline that sometimes I don't have.

What if you really can't check your smartphone, personal email or social media because you don't have access to it? A few weeks ago I started the following experiment:
  1. Activate two-step verification for my Google account
  2. Activate login approvals for my Facebook account
  3. Activate login verification for my Twitter account
  4. Activate two-step verification for my Linkedin account
  5. Give my family a phone number where they can reach you at work in case of emergency
  6. Leave my smartphone at home and go to work
It is difficult to explain how vulnerable and insecure I felt the first time I left my phone at home... but after a few weeks the results have been incredibly positive.

I cannot check my personal email, Whatsapp or social media because after enabling two-factor authentication I need my smartphone for it. As a result, I don't get distracted by notifications every few minutes and I don't proactively use these services. In other words, I can focus on work, increasing my productivity.

When I get home in the evening I receive all the notifications at a time and respond to them all within 20-30 minutes, helping me save over 2 hours a day. that I devote to more enriching activities.

In addition, people don't expect me to be always reachable anymore, giving me a wonderful feeling of freedom.

Another positive side-effect is that your accounts will be protected from unauthorised access by using two-factor authentication.

Monday, January 16, 2017

Bypass blocked ports with Reverse SSH Tunneling

Most organisations have security rules that stop non-standard ports on external resources from being accessed from the corporate network.

One frequent scenario is when you are running a website on a non-standard port (e.g., 5000) on AWS EC2 (e.g., 52.131.143.12and you try to call it from your corporate network. In most cases, if you open your browser and try to access http://52.131.143.12:5000the site won't load despite having the port open on AWS EC2 Security Group.

To overcome this limitation you can use Reverse SSH Tunneling the following way:

  1. Open a terminal and navigate to the folder where you have your PEM key to connect to AWS EC2
  2. Type ssh -i your_key.pem -NL LOCAL_PORT:localhost:REMOTE_PORT ec2_user@xxx.xxx.xxx.xxx (e.g., ssh -i your_key.pem -NL 8080:localhost:5000 ec2-user@52.131.143.12).
  3. Leave the terminal open with the SSH command running. Open on your browser and type http://localhost:LOCAL_PORT (e.g., http://localhost:8080). The website will load.