 All right, let's get started. Welcome everyone on the second track in the session room one in the Saturday of DEFCON CZ. The track is Future Tech and Open Resource Research. There will be three talks. And our first speaker is Priscilla Gutierrez who is an associate quality engineer with Red Hat, while being at the same time researcher in Department of Computer Science, the applied mathematics and University of Sao Paulo. And the topic of our talk is games and genes in research and embedded systems. Flor is yours, Priscilla, good luck. Thank you. Hello everyone. And in this talk I'm going to discuss how open source solutions can prove the public health system with low cost and using games and Arduino. And I'm going to make a disclaimer. I am a very shy person and I'm here to share some ideas with you and learn how to speak in public. So sometimes I may have to stop and take a brief of air and then proceed. And so here is the content of the presentation. And I'm going to start the talk telling you how I have entered this world and, yeah, oh, oh, oh, oh. And I love classical music and everyone who likes this kind of music knows João Carlos Martins who is an amazing pianist. And then he became a stoner master. So unfortunately he lost his hand movements and for decades he was not able to play a single key in the piano anymore. Three years ago a guy named Ubiratan Kalsa created a simple but a powerful glove to allow him to play a piano again. And there are several videos and it's impressive how he can use his hand again to play that. And this impressed me so much and the device he built was simple in construction but was powerful to give him to the master of life once again. And I started thinking how I can do something like this by my own and then I found Professor Toledo and he introduced me to open research. So what is open research? And when you do open research we conduct, we want to do our research and in the open source spirit. We want to make clear and full available all the methodology and the data and all the things we are doing during the research process. And if we have a final product it will be published using an open source license. And if possible but it's good to have online collaboration but sometimes it's not possible to do this and this is unfortunately my case. So I was very ambitious and I started thinking how good would be if my efforts could at least have a little impact in the society and then I found a project and Professor Toledo and one of his students was doing a device. He was using Arduino in games and Matheus who was the student concluded the first part of the project and I'm working from now on and on his device and collecting data and doing all the analysis. So first I want to tell you what is SUS? SUS is a universal healthcare system supported by public resource and it's available for all the people here in Brazil. And it has been crucial during the pandemic to ensure a response against the coronavirus and it provides healthcare and vaccines for all the people here without cost. So I want to work on, I think this is something significant for me and I want to work with open hardware to improve the treatment in SUS and what we have to take into account when doing this? We have to take into account the cost of impact. Most of the time we want to treat and neglect the disease and we want to improve the quality of the public health services itself and we want to construct something that can be used by anyone anywhere here in our country. So we have to build a device which is capable to work to be very simple to make. So try to create a device to using things like virtual reality is not a new thing. The new thing is to try to create something new and with a low cost to be available for all the people because high cost devices are widely available and we want to make sure that every person has access to this here in our country. There are some known studies of high cost devices that are available for all the people here in Brazil and there are some known studies in this field since I have selected these three studies to show to you and this is a new study we are doing. So first of all we have to define our metrics. So what do you want to measure? If the people has a complete independence or if someone needs full health assistance and using this concept we are going to create our device. So why are we using Arduino like this? In this device we have built, I have here one of the prototypes. We are using an inertial device, Bluetooth model and we are not using a connected device or an ordinary camera and this is an interesting question to ask because we are working with patients with a minimum of movement. They cannot even move like this. They do a very small movement sometimes. You cannot even see it. So this is why we choose this embedded system to do our research and it will connect the device to a cell phone and then to the virtual reality device. So this is the hardware we are using, we are building. Matheus did most of this hardware. This is one of his prototypes. Here we have the battery and here we have the Arduino. So we have to have an interface to the user interacting with the environment which will be in the smartphone. We created a simple puzzle using Unity and it will run on a basic smartphone because here in Brazil we don't have so much money to spend with hardware and we use local smartphones like this and then we are going to track the movements and here you see a picture of some avalonters. It took those pieces to the puzzle and completed it. So here are some metrics we have developed to know if the Volter's path is the idea or is not good and the Volter has so much difficulty and the Volter has so much difficulty with the movement to grab those pieces and then we do some analysis of the movement. So our project is still under development. We have to improve this device. We are still working on it but I'm dealing mostly with the data not with the device itself. Professor Toledo has a large group who work on this. We have to finish the usability test because we follow a very strict protocol and then with two or three years start the clinical test and I think it will be very good for other people who... We have some results showing that this kind of device can really improve the treatment. As I said to you during COVID-19 we are still improving and working in the usability test unfortunately and this is not the end of the research. This is just the beginning and I want to share to you how cool things like this are and we as engineers can do amazing things with our knowledge. So the user will have a screen like that without these vectors. The hand will represent the hand he is moving with the device and he will grab the pieces and put into the puzzle to complete the puzzle. Do you understand what I'm trying to say or I'm not clear. So this is what I wanted to show to you and I'm sorry for this bad presentation. I'm here as I said to learn how to... to speak in public and that's all. This is the reference I'm using for my work and that's all. All right, thank you Priscilla. That was an awesome presentation. Thanks a lot. Do you have any questions? Like the chat says no need to apologize the talk was actually pretty good. So let's give people an opportunity to perhaps write some questions either in the chat or in the Q&A section. So my question would be how long are the sessions that the people need to wear this variable and do puzzles with another 10 minutes or are they longer? I'm not sure if I have audio problems right now again. You don't, I can hear. Okay. Priscilla, can you hear us right now? Yes. Yeah, okay. So I'll try to repeat my question. Maybe it wasn't coming through. So I was curious about how long are the sessions with the users who are wearing the variable and doing the puzzles. Are they doing it for one minute or 10 minutes or something like that? No, no. More than three hours. Okay. Sometimes the entire day. It depends on the patient because some patients have very, they, some patients don't have much movement. Okay. So ideally it would be like small and very lightweight, right? People without any restriction would do this, this puzzle in three minutes. But it depends on the patient. Unfortunately, when you suffer a stroke, you lose all, most of our movements. I see. Yeah, we have a question in the chat. Like what type of sensors does the device use? Do you have an accelerometer on it? What is the battery life? Yes. We have magnetometer and accelerometer. We have a gyroscope. And we have a normal battery. It's connected to the Arduino. How long is, how long does the battery last? A bunch of sessions. Okay. A bunch of sessions, some of them are more than ours. That's actually pretty impressive. Seems like we have no other, no other questions. Priscila, are you going to spend some time in the work adventure thing that we are running for DEF CON, for people maybe to reach out to you with other questions? Okay, I'm going. Perfect. Thank you very much. Thank you very much, Priscila, for your talk. Thank you everyone for attending.