Get-MrfkUserInfo.ps1

function Get-MrfkUserInfo {
    [CmdletBinding()]
    param (
        [Parameter(ParameterSetName="username")][string]$Username,
        [Parameter(ParameterSetName="displayname")][string]$DisplayName,
        [Parameter(ParameterSetName="mobilephone")][string]$MobilePhone
    )

    process {
        switch ($PsCmdlet.ParameterSetName) {
            "username" {
                $filter = "name -like `"*$Username*`""
            }
            "displayname" {
                $filter = "displayname -like `"*$DisplayName*`""
            }
            "mobilephone" {
                $filter = "mobilephone -like `"*$MobilePhone*`""
            }
        }

        #Install required modules
        $RequiredModulesNameArray = @('NN.MrfkCommands')
        $RequiredModulesNameArray.ForEach({
            if (Get-InstalledModule $_ -ErrorAction SilentlyContinue) {
                Import-Module $_ -Force
            } else {
                Install-Module $_ -Force -Repository PSGallery
            }
        })

        #Get userinfo of the ADuser (limited to the first hit, and user can't pick manually "yet")
        $ExportedObject = ([array](Get-ADUser -filter $filter -Properties mobilephone,displayName))[0] | Select-Object -ExcludeProperty @(
            "ObjectClass","ObjectGUID","SID","AddedProperties","RemovedProperties",
            "ModifiedProperties","PropertyCount","PropertyNames","Line"
        )

        #Get computerinfo
        $cimsession = New-CimSession -Credential (Get-AdmCreds) -ComputerName sccm-ps.intern.mrfylke.no -ErrorAction Stop
        $allMecmComputers = Get-CimInstance -Query "Select * from SMS_R_System" -Namespace root/SMS/site_PS1 -CimSession $cimsession
        $ComputersArr = $allMecmComputers.where({$_.LastLogonUserName -eq $ExportedObject.Name})

        $ComputerExportArr = New-Object -TypeName System.Collections.ArrayList
        $ComputersArr.ForEach({
            #Get bitlocker info
            $splat = @{
                "Filter" = {objectclass -eq 'msFVE-RecoveryInformation'}
                "SearchBase" = (Get-ADComputer $_.Name).DistinguishedName
                "Properties" = 'msFVE-RecoveryPassword'
                "Credential" = Get-AdmCreds
            }

            $null = $ComputerExportArr.Add(
                [PSCustomObject]@{
                    "Hostname" = $_.Name
                    "MACAddresses" = $_.MACAddresses
                    "BitlockerRecovery" = (Get-ADObject @splat)."msFVE-RecoveryPassword"
                }
            )
        })

        #Post output
        $ExportedObject
        $ComputerExportArr
    }
}

Theres room for improvement (I think).

Awesome!