This is where you would see money spent to monitor the distribution. As you have suggested, how do we know if the money is being used for its intended purpose? We have to spend more money in the form of case workers (and related expenses - offices, heat, hydro, etc) to keep an eye on things.
Are we really saving?
I guess I could support a minimum basic income in principle if, and a big IF, a person could opt out of it. In other words, if a person in need of financial assistance tells his case worker that he's an addict and that giving him money that he could spend as he wishes would do him more harm than good, that his case worker could offer him an alternative. For example, the government could arrange an agreement with the applicant's bank or credit union whereby they would provide him with a debit card to which the government would transfer the money but which could be used only with participating businesses. Participating businesses would be banned from selling any addictive product. This would mean that supermarkets that don't sell alcohol and tobacco and lottery tickets could participate and the card could be used there. apartment rental agencies might also choose to participate, etc.
Furthermore, there should be no turning back. For example, if an addict who has just had his fix and is now in a more lucid state tells his case worker that he's an addict and does not want the ability to spend his money too freely, he cannot go back on his word a few hours later as the withdrawal symptoms kick in. Once you admit to that and request to not have full freedom over the money, you're locked in for at least a year.
Furthermore, a case worker should be required to inform an applicant of the existence of this option before just giving him a minimum basis income. An applicant who goes in to apply for a minimum basic income but who is unaware of the option to have a more restricted income through a special debit card that his bank or credit union could issue him might jump on the opportunity once he's informed of that option of which he might not have been aware previously.
As for mobile telephony companies participating in the debit-card program, recognizing how internet-access is a double-edged sword (emails and websites can give access to employment and business opportunities or simply enable access to addictions, whether drugs, gambling, pornography and all kinds of other addictions including internet addiction itself, perhaps a rule could be that any participating company that sells mobile devices can sell only mobile devices with control apps like Mobicip and Screentime pre-installed. Sure the buyer could just delete the apps after he buys the device, but the fact that the apps would be pre-installed at purchase would at least make him aware of their existence and so give him the opportunity to consider whether these apps could help him in any way to access the internet for productive purposes but not otherwise.
In short, we want to ensure that any such program not harm the poor by just throwing more money at them but one designed to help the poor by giving them a hand up. Also, a case worker should be trained to not judge the applicant so that the applicant can feel comfortable admitting if he cannot handle his money responsibly at the time. This would not be an admission of eternal helplessness but just an admission to the present reality which we would hope to remedy.
Also, an applicant should have an opportunity to request to switch to a more controlled income at any time. If at the time that he applies, he isn't aware that he's addicted, but then once the monthly checks start coming in, he realizes that he just can't stop spending on his drug of choice, he should be free to return to his case worker at any time to inform him of his addiction and that he wants to switch to the controlled income through a special bank or credit-union debit card.
We could even require banks to have built-in features in these debit cards. For example, the cardholder could go online to program his account to block his card from a certain time each night to a certain time each day or even block it entirely on certain days of the week. Depending on the degree of addiction we're talking about, if it's determined that he could be trusted to take cash out of an ATM, then he should be able to program his account to limit the daily amount. Also, while he should be free to lower the amount or further restrict blocking times himself online, he should need to enter a bank during its open hours to have a bank teller to unlock his account.
these are just some ideas.
Furthermore, anyone receiving a minimum basic income should be protected by right to work legislation so that he not be forced to join a labour union. Also, he should be exempted from minimum-wage legislation. Sure any employer paying him below minimum wage should inform him of his right to apply for the basic minimum wage for example, or apply to participate in a government funded trades or professional education program and leave his job without penalty when the training program starts, but we should not legislate him out of the workforce by forcing his employer to pay him the minimum wage.