 Hello, I am Ashwin and we are from the Riktai and we really enjoyed the hack night. So the app we built is actually a spam blocking app. So what we can do with this app is you can give us the phone numbers that you don't want to hear again. So it typically silences the app so it will not annoy you while you are in a meeting or if you don't want to attend a call. So it will keep that number and silent. So typically there are multiple ways in which you could silence a particular contact. One, you have an interface where you could choose a contact and say, here is the interface. So this is the first contact this is opening. Actually I have a huge contact list of around 1000 contacts. So it's taking time. So here is the surup's contact. Suppose I started blocking him. Okay, so actually my phone is in normal mode. Okay, so I just tapped this to stop blocking. Okay, so yeah. He is calling me. So now my phone got in silent mode and I am not able to hear my ring code. Again he will cut the call or I will suppose he checked it. Okay, now in this thing there is another facility. Like this is suppose I open my block list. It takes time. Unblocking him. Yeah, so I am unblocking him right now. Okay, he is not now blocked on my list. This is still, he started blocking, he is still there. So he is now calling me. Now he is coming as a call. Now I know that I don't want to hear him again. So I will just shake the phone. That's not implemented yet? No, it's implemented. Actually it will shake too much. No, no, no. The reason being it has to go on a service. No. Can you try again? No, it's okay I think. So now it stops ringing. Okay, so now it's silenced the call. And now he is registered as a blacklisted number on my phone. So even if he tries to call me again, can he try again? So he is now permanently registered on my list. So typically you could also have, there is a feature where you want to stop just blocking. So you could say unblock, don't block any calls. So this is an unblocking thing. So when you came back home, suppose you don't want to block any calls now. And you are okay to hear anything. So you can end blocking and now when he calls me, it will come up. He will hear it. Even if he is registered on my block list. Okay, so the block list has been decided? Yes. It's kind of like this. Yeah. We are planning to building some other app also but we... No time. Yeah. Can hang out here all day if you want to. Build it. Actually we have to left it for tomorrow. IIT Janmai. Alright. Okay, thank you. It's a real fun hacking through the whole night. Yeah. Thank you. Good job guys.