Hands-On Amazon Echo Dot and Alexa

Amazon Echo, the voice-controlled and hands-free device/speaker was already launched in the US in November 2014, now 2 years later the Echo, and the Echo Dot second generation, is available in Europe. In Germany it was soft-launched in late October on an invitation base at Euro 59.99, the bigger Echo at Euro 179.-.

Amazon Echo Dot

Amazon Echo Dot

Curious enough about having a glimpse into our household and workplace (?) future I requested one and got it delivered last week Friday. At the size of a hockey puck, the device contains 7 microphones, a simple loudspeaker, WLAN and Bluetooth connectivity. No battery, so the Echo must be connected to a USB power adapter at all times. I must admit, the idea of having a “spy” device with microphones permanently listening into my room brings up some privacy concerns, though Amazon claims only the keyword (Alexa, Echo or Amazon) is activating the device, it’s LED ring starts to turn blue, and the spoken commands get transferred to the Amazon cloud, using the Alexa Voice Recognition Service, on which Amazon supposedly spend a 100 million dollars.

Amazon Echo Dot

Amazon Echo Dot

Here a first hands-on experience resume:

Being an Amazon user with a Prime account and already a Kindle and a Fire HD tablet at home, the setup takes less than 5 minutes, inclusive of setting up a WLAN connection from the Alexa App to the device, preparing the WLAN access from the device to your AP and connecting it via Bluetooth to the home theater system. The device is woken up with the keyword or by pressing one of the four buttons on top of it, followed by your question or command.

It does not run a conversational model in the basic use cases, though the skill sets support sessions ! You raise a question or trigger a command, that’s it. It wont ask back (yet). It will respond with the right answer or execute what you have asked for, or respond it if it does not understand you, sometimes it wont do anything at all after activation other than showing the blue ring (maybe due to noisy environment). The basic services available are rather simple or move around the Amazon product landscape, most prominently playing music on demand from the Amazon Prime Music offerings, ordering products from Amazon or responding with the weather info or respond to simple Wikipedia style questions. The power of the device is unfolding with the skill-sets that allow third parties to offer services based on the Alexa services. This can be house-automation, ordering pizzas and other consumer services. Being a regional feature there are about 3,000 skills available in the US but only about 2 dozens in Germany at the time of writing.

My kids had a Sunday afternoon fun time to play with it and trying to fool with it, though at this stage it wears out pretty fast after hearing “I don’t understand your request” and similar responses if you leave its pre-programmed comfort zone (it is interesting to observe how kids approach such a device). Be aware of the Eliza Effect using a device with a synthetic voice and human-like response.

What makes it particularly interesting to me is the evaluation of a completely voice based service and the platforms extensibility through the Alex Skill Set and the API’s that Amazon provides. You find lots of information at the Amazon developer portal and you can even join the Mashup Contest.

In short, right now it is still a toy but with lots of opportunities to come up in the near future. I will look at the potential use cases in a aviation environment, both operational and as passenger and keep you posted.

Amazon Echo Dot

Amazon Echo Dot

While using the Echo I feel a bit like talking to Hal 9000 in the 1968 film “2001: A Space Odyssey” directed by Stanley Kubrick. Echo does not yet have an attitude.

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Increase size and type of AWS EBS volume

I was offline for quite a while because shifting from one continent to another. But now regular posts should be rolling in again.

I am running a couple of instances in pre-production requirement mode and changed from a standard EBS volume to a IOPS volume for the DB instance or the volume with the DB files. I could not identify a reasonable increase of performance, maybe a misconception that IOPS volumes will boost performance, rather provide a defined and consistent random access I/O throughput. I must admit I did not use a value higher than 1000.

Billing IOPS

Billing IOPS

Some recommended reading:

I decided to return to a standard ESB volume for my database as its performance did not benefit from the IOPS type (the DB is not overly busy too).
You cant change type and size of an EBS volume on the fly.

Here the steps to achieve the same: Continue reading

Enforce password for Ubuntu user on EC2 instances

Using linux (Ubuntu) instances on Amazon EC2 is a quite safe thing to do, at least measured by the security provided by the platform (security groups, ACL, physical security,..). I recommend reading their security site here. At the end of the day the server is only as secure as you configure it, if you choose to open all ports running services with their default configurations and password settings, Amazon can’t help you.

When connecting to a Ubuntu server with ssh you need to provide the keyfile (somekeyfile.pem) that you can download when creating the key pair.

Key file

Key file

This 2048 bit key is required to login as regular ubuntu user. What I dislike is the fact that this user can sudo all, so once someone manage to get into you user account, he has root access too. I recommend to set a password for the ubuntu user and change the sudoers configuration.

Change the password for user ubuntu

Open the sudoers include file

sudo vi /etc/suderos.d/90-cloudimg-ubuntu or sudo vi /etc/sudoers

change last line from

ubuntu  ALL=(ALL) NOPASSWD:ALL

to

ubuntu ALL=(ALL) ALL

Copy EC2 instance to another region

Is it finally possible ? While the AMI import tool is long awaited for but only available for Windows, it is rather a big hazzle to transfer manually (see this) any other OS ( my last attempt in 2010).

Today Amazon announced the EBS Snapshot Copy Feature (across regions). The intention is certainly to allow easy migration of data to another region, as you can copy the snapshot, create a volume and attach it to an instance. I was curious to try if I can migrate my Ubuntu instance to another region and it worked. You can use both command-line as well the AWS web admin.