some people will even sleep during your talk, true story. it may be after lunch, they may have had a long day or maybe they just find you boring (sorry, it’s true), but who cares? if it’s everybody, now you have an issue, but trust me, it won’t. so once you understand this, you are good to go.
the most attention grabber you can have is without any doubt, knowing your subject and be excited about it. of course, the new technology that all the cool kids are using may be nice, but won’t be as good if you don’t have both requirements i just wrote! i got some people telling 