I tried this with an Android app and it went well for us. The only problem was that the UI was super slow in Firefox, but it worked well in Chrome. That was several months ago so hopefully they fixed it by now.
Apples and oranges. I stand corrected about them snooping on users, but Mobidia is more upfront about what they do.[1] Onavo is deceptive, suggesting that they improve "security" and leveraging scammy marketing to drive installs.
If you use a VISA check card from your bank you can easily monitor all expenses through your company bank account. I found this helpful for my startup, but as you get bigger and spend more money you'll probably want to look at cards that give you extras (cash back, etc...).
The big problem with that is that debit cards have much slower fraud protections than credit cards (depending on issuer, of course).
If fraud hits your debit card, your cash account is empty and things like rent may be getting returned while you deal with it. With a credit card, that's the credit card company's money so they move faster.
The scary part of this problem is buying medications or things you ingest. I no longer buy any kind of food or health products on Amazon because I worry they may be fake.
Buying fake food and health products is dangerous.
I don't buy pet food from Amazon either for the same reason.
It's also interesting the article refers to Sarao as frugal. If he was really frugal it seems like he would have said that X amount of money is enough and stopped risking it all. Scary stuff!
In my opinion, this kind of frugality happen when you have a small (or non-existant) social circle. The main reason to spend (clothes, cars, etc..) is to impress the people around you. If they don't exist, you are not that much pressured to spend.
This describes me though I have a reasonable social circle I pretty much don't care about any of the things on your list.
I rent a flat (apartment), I only own jeans, t-shirts and pullovers, don't own a car, own second hand (but good) furniture.
I'm trying to remember the last time I spent over £50 on anything that wasn't a gift for someone else and I really can't, perhaps my weight set about 18mths ago.
I'm just not attracted to stuff or to signalling via it.
Implementing a very basic order entry check to verify each client's abuse of an orderbook like this is pretty trivial and done in a lot of places. CME just didn't want to do anything about it.
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